The teaching of grace, as conveyed through the apostles, transforms the ordinary Greek word charis, translated as grace, into a concept of profound spiritual significance. Grace embodies unearned and unmerited favor, something completely undeserved and unattainable by human effort. It contrasts sharply with erga, meaning work, which implies something earned through conduct or activity. Grace is a gift from God, exemplified by His decision to come to earth, live, and die for humanity, an act not prompted by human merit but by His own will to provide a savior. Grace extends beyond the forgiveness of sin, reaching into every aspect of the salvation process. It is described as grace upon grace, or grace to meet every need, indicating a continuous outpouring from God for various purposes, all unearned and unmerited. This dynamic nature of grace enables believers to mature spiritually, to grow in the grace and knowledge, and to strive toward the fullness of Christ. Without this ongoing gift, spiritual growth would cease at forgiveness. The gospel, referred to as the word of grace, has the power to build up and edify, fostering maturity and perfection. It is a revelation from God, a mystery or secret impossible to penetrate without His disclosure. This revelation is not earned but given freely by God for His own purposes, underscoring that He owes humanity nothing yet chooses to favor some with this knowledge. Grace also manifests in justification, where God declares sinners righteous, not because they are without guilt, but as a legal act based on Christ's sacrifice. This justification is a gift, not a right, as all have sinned and fall short of God's glory. It is not vindication or exoneration, for God's judgment is always righteous, knowing all facts and hearts. Instead, it is an act of grace where righteousness is imputed, viewing believers as sinless through Christ, despite their unworthiness. Furthermore, grace eliminates any basis for boasting or self-glory, as spiritual accomplishments are solely due to what God has given. It establishes a personal attachment to Christ, likened to being part of a living body, where all strength, life, and growth come from Him. This relationship lays upon believers the responsibility to humble themselves before God and His law, recognizing Christ as their righteousness, justification, sanctification, and redemption. Grace also teaches and trains, penetrating lives like light disperses darkness, guiding believers to deny ungodliness and worldly lusts, and to live soberly, righteously, and godly. It does not force but counsels, comforts, encourages, admonishes, convicts, rewards, and restrains. Contrary to misuse by some as an excuse for lawlessness, grace obligates obedience to God's law, placing believers under a deep sense of duty due to the magnitude of the gift received. It empowers them to make right choices, freed from bondage to sin, and motivates a life of repentance and conformity to God's way. Finally, grace is dynamic, not merely passive forgiveness but an active empowerment from God. It enables believers not just to be saved, but to overcome and become like Him, working within them to will and to do for His good pleasure.

Grace, as a central theme in God's relationship with humanity, sets the parameters for our connection with Him. Without it, there would be no salvation for anyone. God's grace equips us with abilities and powers to fulfill His purpose, aiming to develop in us the same kind and quality of character He possesses, ultimately bringing us to His glory. This character, however, cannot be created by mere command; it must be built through experiences over time, requiring our voluntary cooperation within the circumstances He orchestrates. Salvation and faith are gifts of God's grace, foundational to His creative work in us. Everything in this process is a result of His activity in our lives, akin to an inventor assembling parts to complete a whole. Our works, as fruits of His grace, do not earn salvation but serve to glorify Him and internalize His character within us during the period of sanctification, as we are formed into the image of Jesus Christ. In the Old Testament, God's faithful character is exemplified through the term chesed, illustrating His steadfast love, generosity, patience, mercy, kindness, goodness, and pity toward Israel within the covenant. In the New Testament, the apostles use charis to specify particular ways God's loving character is expressed in His plan of salvation. While chesed is broad, charis focuses on the Giver, God, providing undeserved power for growth and fulfilling responsibilities. Jesus Christ is described as full of grace and truth, the source from which we receive continuous empowerment. Grace is not a one-time act but a flowing series of benefits, described as grace upon grace, supplying blessings, favor, powers, forgiveness, knowledge, understanding, wisdom, healings, and protection through God's loving concern. This continuous flow meets our spiritual needs for His creation, not our every desire, as He moves toward His objective of preparing us for His family Kingdom. The apostles often used grace to denote the powers given by God to meet spiritual needs. Through Jesus Christ, grace appears as salvation, teaching us to deny ungodliness and worldly lusts, and to live soberly, righteously, and godly, looking for His glorious appearing. Grace, personified in Jesus Christ, encompasses teaching, empowerment, wisdom, understanding, inspiration, and discernment to identify the subtleties of satan's anti-God system. It represents the freeness of God's personal, patient, and concerned generosity, continuously flowing to assist us along the way. Grace is most evidently associated with justification, a necessary part of being created in Christ's image. Justification by grace through faith prevents human pride from entering our relationship with God, as it is given freely while we are still sinners, not based on moral merit or works. God demonstrates His love by justifying sinners through Christ's death, ensuring that salvation remains a future promise sustained by His life and personal involvement. This gracious act underscores that God owes us nothing but death due to sin, yet offers justification as a gift, unearned and freely given, to maintain humility in our relationship with Him.