The responsibilities of a priest are central to serving God with dedication and reverence. God claimed the entire tribe of Levi for full life service to Him, making the Levites the priests of Israel, devoting their lives to maintaining and enforcing the correct worship of God, first in the tabernacle, and eventually in the temple. A major responsibility of the priesthood was to give their lives in service to God, though often they did so reluctantly, as seen in the time of Malachi. Personal, moral purity was essential to the priesthood, with God requiring physical perfection in His priests to teach the lesson of purity and holiness. The high priestly family of Aaron and his sons held the highest responsibility and privilege to serve in the holy place and the most holy place of the tabernacle and the temple. Priests were to act as guardians and defenders of God's truth and creation, a role that extends to all humans in a broader sense. The prophet Malachi warned the priests of Israel about their declining spiritual conditions, highlighting their lack of honor and reverence through despising God's name, pride, disobedience, unacceptable attitudes, laziness, failure to magnify God's name, hypocrisy, weariness for things related to God, and deception in offerings. As spiritually holy and royal priests today, we must take our responsibilities seriously, recognizing the honor and privilege of being called to such glorious service. We are compelled to live a life of sacrifice to God through our conduct, faith, and acceptable spiritual sacrifices. Under the spiritual High Priest, Jesus Christ, who is faithful and pure, we must emulate Him as His royal priesthood, ensuring we do not fall into the same attitudes of dissatisfaction or contempt as the ancient priests, but instead honor and revere Him in all we do.

God is preparing us for a great purpose, which includes not only ruling in His Kingdom but also serving as priests. We are called to be a royal priesthood, as stated in Revelation 5:10, where it is declared that we have been made kings and priests to our God and shall reign on the earth. This dual role emphasizes that we must actively prepare to be priests just as we prepare to rule. Even now, we bear priestly responsibilities, offering up spiritual sacrifices, which are as crucial today as they will be in the future. If we do not practice being a priest in the present, we will not be ready for the responsibilities of the World Tomorrow. A priest's primary function is to assist people in accessing God, mediating and reconciling between God and humanity to foster union with Him. This role involves not only reconciliation but also teaching a way of life to strengthen and improve that relationship. During the Millennium, represented by the Feast of Tabernacles, the priestly work will be immense, with more sacrifices required than in any other period of God's plan, indicating the significant responsibility we will carry in offering spiritual sacrifices on behalf of the people before God. In the past, God provided saviors and leaders to deliver and teach Israel, and He will follow this pattern in the future with king-priests who are His sons, serving under the High Priesthood of Jesus Christ. Our role as priests includes judging, teaching, and mediating, helping to lead others out of sin and into fellowship with God. This fellowship, established through sacrifice, must be renewed daily through continued sacrifices, as our relationship with God fluctuates and requires constant strengthening. A priest is a bridge-builder, aiding in accessing God by offering sacrifices, which are gifts to Him meant to establish or maintain fellowship. These sacrifices are not limited to death but include the offering of a life lived in dedication, devotion, and service. The greatest sacrifice is self-sacrifice, giving of oneself in obedience to God's will, as exemplified by Jesus Christ, Who offered His life entirely to align with the Father's purpose. We are called to present our bodies as living, holy, and acceptable sacrifices before God, following His example in practical, daily application of His teachings in every aspect of our lives. This preparation is essential to fulfill our future roles as kings and priests in His Kingdom.

The responsibility of a priest is to embody and reflect the holiness of God, serving as a constant reminder to the entire nation and church that everyone is to strive for holiness as God is holy. Priests, through their religious instruction and living example, act as intermediaries between God and the people, bridging the gap with guidance and demonstration of a holy life. Under the New Covenant, all believers are called to be a kingdom of priests, created in the image of Jesus Christ, bearing priestly responsibilities to each other under the High Priest, the Lord Christ. This intimate association with the Father, the Son, and each other within God's family demands that the whole family become holy as He is holy. Holiness is paramount for those called to serve God, requiring priests to maintain a high standard of moral and ceremonial purity. Physical imperfections or deformities disqualified a priest from service until healed, reflecting the perfection of God in body and spirit. Priests were to avoid defilement, adhering strictly to God's commands without deviation or innovation, as seen in the severe consequences faced by Nadab and Abihu for using unauthorized fire in their offering. Ceremonial regulations further emphasized the carefulness with which priests must conduct their lives, prohibiting service when unclean until purification was achieved. The priest's life was hedged with restrictions to maintain a state of holiness, including strict rules on marriage within their lineage to ensure purity of descent, and prohibitions against imitating pagan practices. Even temporary defilement, such as contact with the dead, rendered a priest unfit for duty until cleansed, underscoring that sin and death are enemies of God and defiling to those who handle holy things. These stringent standards, while burdensome, were designed to typify the perfection of Jesus Christ, the ultimate model of holiness for all priests, emphasizing the highly responsible position of representing God before the people. God demands a very high level of holiness from all called to this office, expecting the highest conduct and attitude before Him, the world, and the church.

Priests bear responsibility to wear head coverings during service at the tabernacle. This practice signals submission to the authority of God who resides there. The high priest wears a turban of fine linen with a gold crown engraved holiness to the Lord fastened across the forehead by a blue cord. Ordinary priests wear hats of fine linen. White linen on the head symbolizes righteousness and wisdom. The high priest must bear the iniquity of the holy things which the children of Israel hallow. All priests must avoid iniquity and death by wearing linen trousers from the waist to the thighs when ministering. Priests hold responsibility to make distinctions between the sacred and the profane and between the clean and the unclean. They must teach the Israelites all the decrees which the Lord has spoken. They must not drink wine or strong drink when entering the tent of meeting. They must maintain single-minded devotion and clear thinking to avoid reckless or presumptuous conduct. Priests bear responsibility to offer spiritual sacrifices acceptable to God through Jesus Christ. They must present their bodies a living sacrifice holy and acceptable to God as reasonable service. This requires devoting intellect eyes ears tongue arms hands legs feet and all members to service in religious life family life and work. They must put to death fornication uncleanness passion evil desire covetousness anger wrath malice blasphemy and filthy language. They must put on the new man renewed in knowledge according to the image of Him who created him. They must allow the mind of Christ to direct humble submissive conduct. They must work out their own salvation with fear and trembling without complaining or disputing. They must hold fast the word of life and shine as lights. These actions prepare priests to serve under the High Priest Jesus Christ in a royal holy and righteous priesthood that operates universally and eternally.

A priest must be righteous from the inside out as the minimum requirement for service. This righteousness forms the foundation for everything else and aligns one with the law of God. A priest must also pursue holiness by separating from the evil of the world in attitude and conduct. This separation occurs through conformity to the law of God and through being a vessel of the Holy Spirit. A priest must gird up the loins of the mind by remaining focused on the Kingdom of God and on matters pertaining to salvation and service to Christ. This requires sobriety, self-control, and freedom from the rashness and confusion of the world. A priest must always be ready for vigorous and active service. Jesus Christ exemplifies this readiness by living continually to make intercession for those who come to God through Him. A priest must have compassion on those who are ignorant and going astray while remembering personal weaknesses. This remembrance tempers responses to the problems of others. A priest must sympathize with weaknesses without approving sin and must bear one another's burdens. Jesus Christ models this compassion by dealing kindly with people despite knowing their hearts and their unworthiness. The robe of office sets a priest apart and dignifies the holder of the office with authority. The high priest alone wears this blue robe. Its color signals the pleasant difference and separateness of God from mankind. The seamless construction of the robe with its strengthened neckband symbolizes that the character and faithfulness of the high priest cannot be torn away. The bells on the hem of the robe assure hearers that the priest remains alive and faithful in service while also reminding them that the sound of God's word continues to go forth to the earth.

The responsibility of the priest centers on growing in holiness as the essential requirement for the office, since the priest stands between God and worshippers to instruct and exemplify the way to become holy as God is holy. This growth occurs through the sanctification process under both covenants, where God purposes to form a holy nation by calling individuals to holiness while equipping them to aid others in the same pursuit, as all are in training for collective priesthood service. Holiness reflects God's unique character of loving purity and power, and the priest must maintain it through disciplined endurance of chastening that trains rather than punishes, yielding the peaceful fruit of righteousness to those prepared by it. This preparation follows the pattern established for the High Priest, who learned obedience through sufferings to be perfected as captain of salvation, so that those called into the Melchizedek order under Him share one family character and mindset. The priest therefore pursues peace with all and holiness without which none will see the Lord, strengthening the weak and straightening paths so the lame may be healed, while standing fast in the traditions taught and walking worthy of the calling through humility, meekness, patience, and forbearance in love. Unity with God forms the foundation for promoting unity among the brethren, as holiness flows from relationship with the Father through the Son. Cleansing by the Word sustains this state, requiring daily attention to God's instruction that washes the mind and equips the priest to handle responsibilities consecrated by blood on the ear for attentive listening, the thumb for careful handling of sacred things, and the toe for upright conduct before the people. Divine appointment to the office demands that the priest neither innovate nor deviate but adhere strictly to God's Word, thereby reversing the chaos of sin by modeling the way of peace that will extend over the earth in the Kingdom.

The church is a priesthood in training, called in 1 Peter 2:5, 9 (drawing on Exodus 19:4-6 and Isaiah 43) to offer spiritual sacrifices acceptable to God through Jesus Christ and to show forth His praises. Old Covenant priestly ceremonies were physical shadows that must be raised to a spiritual plane, so the detailed Levitical instructions, which God enforced with death in the cases of Nadab and Abihu and of Korah's rebellion, define what believers are now to do daily. A priest's work is mediatorial and first of all a matter of drawing near to God. God Himself makes this possible by cleansing and calling His people through Christ's blood and by making them partakers of the divine nature. Israel refused that nearness at Sinai, but the church has no excuse for refusing. "Priest" carries the sense of "first," a leader who goes before others, so the church goes first into God's presence on behalf of the world, which will follow later. Romans 12:1-2 makes the whole of life a living sacrifice, with the believer both priest and offering. This includes private duties such as prayer, meditation, and thanksgiving, along with Bible study that takes sacrificed time, since the clean animals "chew the cud" while "swarmers" are always busy. It also includes sharing, encouraging, and correcting others (Hebrews 13:15-16). Public witness is equally required, through an example set apart from the world's conduct and through preaching the gospel. Because God is holy, priests must be pure, continuing the cleansing begun by Christ's blood by keeping God's Word in the power of His Spirit.

Believers are a present royal priesthood offering spiritual sacrifices within the church, nourished by Christ's exclusive altar. The Feast of Tabernacles mirrors Levitical consecration, with its seven-day structure and blood application to ears, thumbs, and toes symbolizing hearing God, serving, and walking steadily. This pattern emphasizes present sanctification over merely prophetic future, inviting believers to be continually filled from God's table. Neglecting this spiritual food risks stagnation, so the feast serves as a vital period of consecation, strengthening believers to serve alongside their High Priest.