In the book of Ephesians, Paul emphasizes a profound connection between doctrine and practical application, bridging the inspiring vision of the first three chapters with actionable conduct through the pivotal conjunction "therefore" in Ephesians 4:1. He urges believers to "walk worthy," implying a balanced life that harmonizes doctrine with morality, theory with practice. This balance is essential, as Paul instructs that neither study nor action should be neglected; both are necessary to maintain spiritual vitality and motivation, keeping God's glory ever before us. Paul further elaborates that walking worthy means living in a manner that is becoming, or tastefully adorning, the underlying doctrine. Our outward conduct should be an attractive witness, harmonizing with the foundational truths to present God's way of life beautifully, fostering unity among believers. In Ephesians 4:1, the term "vocation" is used, more accurately translated as "invitation" or "calling," signifying an extraordinary summons to prepare for the Kingdom of God, akin to being invited to the wedding of the King's Son as the Bride. In Ephesians 1 and 4:4, Paul reiterates this invitation to be holy and without blame before Him in love, to be sanctified, and to grow in the grace and knowledge of Jesus Christ. This calling involves overcoming and becoming holy, a serious endeavor as without holiness, no one will see the Lord. Paul outlines characteristics of conduct that adorn this calling, closely linked to maintaining the unity of the faith, aiming toward a singular family and kingdom under God. The unity Paul describes in Ephesians is not merely social or organizational but a spiritual unity flowing from the Father and the Son through the Holy Spirit. This unity, rooted in the doctrines of the first three chapters, is theological at its foundation, requiring a correct understanding of truth. It cannot be forced externally through corporate mergers or political unions but must emanate from within, generated by shared beliefs and attitudes among believers yielding to these truths. Paul also addresses the disruption caused by sin, which divides humanity from God and each other, as seen from the Garden of Eden onward. Through Jesus Christ, reconciliation is made possible, granting access to God and the divine nature via the Holy Spirit. Believers, as forerunners in God's household, bear the responsibility to maintain this reconciliation by living a life worthy of their calling, contributing to the unity that already exists through the Spirit, as noted in Ephesians 4:3, where Paul instructs to keep, not create, this unity.

The Book of Ephesians carries a primary theme of unity, emphasizing the spiritual unity that God will produce to endure forever. In Ephesians 5:18-21, Paul lists characteristics of those filled with the spirit, which foster this unity: they exhort and instruct one another, sing songs of praise, remain grateful to God in all things, and mutually defer to each other in the fear of the Lord. Submitting to one another, as highlighted throughout much of the remainder of Ephesians, is essential to unity, with Paul applying this principle to relationships in the home, between husband and wife, and in chapter 6, between parent and child. The first three chapters of Ephesians reveal many factors to which we must submit in a common cause, while subsequent instructions following the word 'therefore' address elements of character necessary for submission. In Ephesians 4:2-3, Paul urges walking worthy with humility, meekness, patience, and forbearance, which lead to submitting to one another in the fear of the Lord. He emphasizes diligence in guarding and preserving the unity of the spirit, using the Greek sense of hastening and hurrying to underscore the urgency of protecting what already exists as part of the spiritual body of Jesus Christ. Paul stresses that unity is not created but must be guarded, as failure to do so results in spiritual weakening and scattering. These character elements—humility, meekness, patience, and forbearance—are vital to maintaining liberty and unity within the body.

In the Book of Ephesians, particularly in chapter 4, Paul emphasizes essential qualities for maintaining the unity of the spirit. In Ephesians 4:2, he highlights lowliness or humility, meekness, patience, and forbearance, all of which involve a form of restraint in dealings with others. Humility, the most significant of these, stems from an honest comparison with God, revealing our shortcomings and fostering a realistic foundation for relationships with Him and fellow man. This quality, alongside meekness, patience, and forbearance, guards the unity of the spirit through a willingness to submit to God and esteem others better than ourselves. Moving into the subsequent verses of Ephesians chapter 4, Paul introduces seven essential elements of unity, often remembered for the series of seven ones. These elements provide reasons to diligently keep the unity of the spirit, frequently tied to the concept of the church or the body of Christ. Paul uses the church as a primary reason for actions or abstentions, underscoring the importance of understanding our place within it to avoid losing our standing. These seven doctrinal elements are crucial for setting the order of priorities in maintaining church unity, guiding thought and practice on a straight and narrow path in God's hands.

The book of Ephesians serves as a vital foundation for understanding unity within the church. It is structured similarly to the book of Romans, with Paul, under God's inspiration, emphasizing doctrines that pertain specifically to unity. While Ephesians does not contain all necessary information on this subject, it highlights key aspects essential for fostering unity among believers. At the critical juncture of Ephesians 4, the word "therefore" acts as a bridge, connecting the doctrinal foundation laid in the first three chapters to practical applications that follow. This conjunction introduces commands, conclusions, and exhortations, urging believers to apply the teachings that precede it in order to achieve unity, whether in a family, church, government, or nation. In the first three chapters, Paul presents a vision of God's plan, revealing that God has predestinated His people from the beginning, chosen them, and given them insight into His purpose. Ephesians 1:2 speaks of grace and peace, the fruit of unity; verse 9 reveals the mystery of His will; verses 12-14 affirm the gift of His Spirit; and verse 6 declares that He has made His people accepted in the beloved, forgiven their sins, and justified them. Ephesians 2:10 emphasizes that believers are His workmanship, crafted by the greatest Creator who knows their innermost being and shapes them for His purpose. In chapter 3, Paul builds toward a grand conclusion, underscoring the revelation given to the Gentiles and the fullness of God that believers are called to embody. The "therefore" in Ephesians 4:1 urges action, compelling believers to live out the doctrines presented earlier. Paul instructs them to apply these teachings practically, as they provide the direction and motivation needed for unity. If believers fail to follow this guidance, unity will not be achieved. Later, in Ephesians 4:3, Paul does not call for creating unity but for guarding it, indicating that unity already exists within the church. Despite any scattering or division, the church remains unified at its core, though this unity can be destroyed if not diligently protected. Additionally, Ephesians 5 addresses the unity between husband and wife, setting a foundation for family unity and preparation for eternal unification with Jesus Christ in the Kingdom of God. This reflects just one aspect of the broader theme of unity that permeates the book. Overall, Ephesians provides a doctrinal base and motivation for sanctification, which requires work, sacrifice, and humility to align believers with God's character and purpose, ultimately leading to holiness and unity with Him and each other.

The Book of Ephesians plays a significant role in understanding the process of unity and sanctification within the church. In the sermon Unity (Part 3): Ephesians 4, the focus shifts toward practical applications of the principles that foster unity and peace. Sanctification, distinct from justification, is highlighted as a process of becoming holy through obedience, overcoming, prayer, study, and producing fruit, enabled by God's Holy Spirit. This process purifies the heart and infuses God's divine nature, creating His image and holiness within us. Sanctification guards the unity of the Spirit, aligning us with the perfect unity of the God Family, and begins from the moment we receive God's Spirit, as noted early in Ephesians with the sealing of the Holy Spirit. Ephesians also emphasizes the importance of living out the doctrines and truths of God. The application of these truths, as seen in Ephesians 2:12, is likened to nurturing a seed with rain, sunshine, weeding, and fertilizing to maximize its potential for fruit. Unity does not appear miraculously but becomes a reality through individuals making themselves ready by grasping and believing the truths of the doctrines, which drives the desire to be holy and sanctified. In Ephesians 4, broad directions and general goals are laid out for walking worthy and endeavoring to keep the unity of the Spirit in the bond of peace. Walking worthy involves giving equal weight to doctrine and practice, ensuring a balance that prevents lopsidedness. This balance requires continuous effort, as the vision must be kept alive and growing through greater understanding to maintain zeal. Conduct must be consistent with the gospel, adorning the doctrine tastefully so that it attracts others to the great answers and hope contained within. Specific instructions follow in Ephesians 4:17 and beyond, delving into the nitty-gritty of practical application. The call to walk worthy is not merely about living a good life but about achieving a balanced and becoming conduct that matches the gospel, making Christianity appealing and powerful. This balance of doctrine and application is essential for unity, ensuring that neither study nor practice is neglected, and motivates us to push forward in a way that is beautiful to behold, drawing others to the truths of God's word.

Ephesians 1:17-19 and Ephesians 1:22-23 highlight the profound work of God in drawing us into oneness with Him. In Ephesians 1:17-19, we see the emphasis on God's desire for us to know Him deeply, to grasp the hope of His calling, and to understand the immense power He wields on behalf of those who believe. Ephesians 1:22-23 further reveals that God has placed all things under the feet of Jesus Christ, appointing Him as head over everything for the church, which is His body, the fullness of Him who fills all in all. These passages underscore the divine purpose of uniting all things in Christ, reflecting the overarching theme of reconciliation and harmony with our Creator.

The Book of Ephesians emphasizes the theme of unity as central to God's purpose. From the earliest verses in chapter 1, it is clear that God's premeditated plan is to create a glorious family redeemed through Jesus Christ, united as one with Him. This epistle addresses individuals becoming aware of their weaknesses while recognizing their responsibility to cease sinning and achieve oneness with the Father and the Son. Paul, in Ephesians, identifies sin as the major cause of disunity within the congregation, highlighting qualities such as pride, fear, rivalry, cruelty, and lust—forms of self-centeredness rather than God-centeredness. In Ephesians 2:2, he points to the influence of the prince of the power of the air, a negative and rebellious power that has shaped individuals before conversion, contrasting it with the positive power of God mentioned in Ephesians 1:19. This new power entering one's life creates choices previously unavailable, requiring a conscious effort to draw upon it to maintain the oneness established by God's calling. Paul also portrays Christ as the Head of a spiritual body, with believers forming the rest of this body, akin to individual cells or parts of an orchestra responding to a director. This analogy underscores the need for each part to respond to Christ's direction to fulfill the Composer's desires, despite challenges posed by human nature's tendency to resist and malfunction. In Ephesians 5:29, Paul reflects on the unity of operations within the human body as a teaching about men's relationship with God and the church, illustrating the intimate connection and responsibility within this spiritual body. Furthermore, Paul prays for believers to receive the spirit of wisdom, revelation, and knowledge of God, along with enlightenment regarding the hope of their calling. He emphasizes the immense power available through Christ, using the illustration of Christ's resurrection in Ephesians 1:20 to demonstrate God's ability to transform and empower. This power, essential for fulfilling responsibilities as first fruits of God, is willingly provided by Him to enable believers to live according to His will and achieve unity. In practical terms, Ephesians calls for deliberate cooperation with God to produce oneness, acknowledging that while uniformity is not required, a basic agreement on the goal and the path to achieve it is necessary. Challenges to unity will arise due to individual differences, but drawing on God's power enables believers to overcome these, fostering a tighter bond within the body of Christ.

Unity is the theme that threads its way through the book of Ephesians. Paul shows in the first chapter how a measure of unity with God was made possible through His calling and the giving of His Spirit, and before that chapter ends he prays that the called might grasp the great hope of their calling of being in Christ Jesus. At the beginning of chapter 2 he briefly outlines why unity is so difficult to achieve, noting a great Adversary whose influence works against unity with God and therefore against one another as well. In the remainder of the chapter Paul shows that this influence is so prevailing that the only way to be saved from the destruction caused by disunity is by God's merciful grace, for salvation, which is unity or oneness with God, is by means of grace. Beginning in Ephesians 2:11 Paul addresses a congregation containing both Israelites and Gentiles who had real differences that prejudiced each against the other. He reminds the Gentiles of their past complete separation from both Christ and Israel, while also reminding the Israelites that their circumcision was only handmade and therefore offered nothing spiritually for them to boast about. Through God's calling both groups now share faith in Christ, justification before God, and hope in the Kingdom, and this commonality in Jesus Christ is what creates peace between them. Christ Himself is their peace, having made both one by breaking down the middle wall of partition and abolishing in His flesh the enmity that existed between the two groups. The real barrier to oneness was each side's attitude toward law: the Israelites' religion had become formalized around ceremony while they minimized the spiritual and moral laws and overlooked pride-generated sins such as self-righteousness, while the Gentiles' natural antagonism against God's laws moved them to resent the Israelites and to harbor an envious hatred equally evil. The solution for both was to carry out their responsibilities to Christ, who loved them equally, by humbling themselves to repent, forgive, and make the sacrifice of compromise, thereby straightening out their relationship with each other and with God so that unity could become a reality.

In Ephesians 2:14, it is declared that Christ Himself is our peace. The proper translation from the Greek emphasizes that He alone is our peace, meaning that true peace and unity come solely through Him. Regardless of what we might think or do to achieve peace—whether through wealth, power, possessions, or personal justifications—none of these can produce the lasting peace that passes all understanding or foster true unity with others. In fact, such things may often lead to greater disunity and division. Only through Jesus Christ, as the source of our peace, can genuine unity be established within the Body, flowing from our relationship with Him and the Father.

The central thought of the Book of Ephesians is that Jesus has brought to a disunited world the way of unity, which must first be manifested and demonstrated in the church. This unity is achieved through faith in Him, and it is the church's task to proclaim and teach this message with diligence and perseverance. In the first three chapters, Paul focuses on what believers understand about the function of the church in God's plan and the riches of God's grace in Jesus Christ, emphasizing that dead sinners are made alive and gain eternal salvation by grace through faith. The last three chapters explain the implications of God's grace for the church, individuals, and families. Beginning in chapter 4, Paul sketches what each member of the church must be to fulfill their part in God's plan, detailing the character required for the church to be Christ's instrument in carrying out God's plan of salvation for mankind. He provides a general description of the character of the life believers are to live, stating that it must be worthy of the calling with which they were called. This worthiness involves characteristics such as lowliness (humility), gentleness (an element of meekness), longsuffering (patient endurance), and bearing with one another in love (loving forbearance). Paul then specifies the need to endeavor to keep the unity of the Spirit in the bond of peace, urging believers to guard the truth and not be carried away by every wind of doctrine, doing so with humility and gentleness. Paul continues with arguments and practical instructions, emphasizing that believers should no longer walk as the rest of the world does, a principle that impacts every aspect of life. He consistently starts with general principles before addressing specifics, ensuring that the details are understood in the light of the whole. In Ephesians 4, Paul urges the Ephesians to lead a life that matches their saintly responsibilities, providing a standard of balance between doctrine and practice. He specifies four virtues—humility, gentleness, longsuffering, and loving forbearance—as essential for good relations within the church, all of which are aspects of love exemplified in Jesus Christ. Paul also highlights the power of the calling with which believers were called, noting that it comes effectively with the Holy Spirit's power, propelling them from death into newness of life. This calling compels believers to live a holy life, reflecting their status as the called-out ones, and to produce spiritual fruit to glorify God in all they do. Unity in the church, given through Christ by God's Spirit, is a profound oneness that must be maintained through effort, as Christ is the peace that breaks down the wall of separation caused by sin. Believers are to live in a manner that reflects honor and glory upon God and His Son, always remembering their identity as God's children and heirs with Christ.

The book of Ephesians emphasizes the theme of unity within the church, illustrating why unity is possible and how it should be achieved. God has been planning His purpose for unity before time began, aiming to bring all together into one Body, one Kingdom, one Family, and one Church. Despite mankind's divisions, driven by free moral agency and the temptations of the devil, God's purpose remains to unite all people. The church is presented as a dynamic, living organism, owing its existence, life, and governance to the living Jesus Christ, who is the means of peace, especially in joining together Gentile and Israelite in a worldwide spiritual organism. In Ephesians, loyalty to Jesus Christ is the common bond among diverse people, making Him the source of peace and the foundation for church government. The theme of unity continues with the mystery of uniting all people into one, as highlighted in chapter 4, which urges a walk in unity. God, aware of the challenges, provided gifts to the church in the form of ministers to bring members to a common body of beliefs, essential for unified action. The ethical demands laid out by Paul in Ephesians 4:17 onward stress the need for right moral conduct alongside spiritual theology to achieve harmony, emphasizing personal responsibility to govern oneself under the headship of Jesus Christ. Relationships within the church are to be based on mutual submission out of reverence for God, not on social status or other worldly measures, as seen in Ephesians 5. This submission, rooted in a sacrificial attitude modeled after Christ, avoids domination or blind subservience, promoting voluntary consent and faith in Him as the path to unity. This principle applies to all, including the ministry, and does not involve submitting to sin but focuses on choices between wisdom and foolishness in daily life, aiming for the best way to foster unity. The ministry, as a gift from God to the church, holds a specific and narrow authority focused on equipping the saints for service and edifying the Body of Christ, as described in Ephesians 4. Their role is to guide and educate church members to reach the fullness of Christ, not merely to make them decent people, but to form perfect examples of Christian character. The authority of the ministry is not dictatorial but rests in teaching and scriptural persuasion, aligning with the broader theme of unity and mutual submission within the church.