After being declared sinless and unleavened, God's people actively work, with divine help, to remain free from sin and to replace every trace of it with righteousness. This ongoing process is driven by hope in Jesus Christ, the certain expectation that those who are now children of God will see Him as He is and be made like Him in moral and spiritual purity. The hope is not uncertain but rests on the Father's love, the gift of adoption into His Family, and the promise that the sons of God will be conformed to the image of His Son. Because believers already belong to that Family, they purify themselves daily by fleeing temptation, guarding the heart and mind against every returning sin, and filling the void left by purged leaven with the Word of God and the fruit of the Spirit. This inward work of the spirit and character differs from the outward act of cleansing; it requires deliberate, positive effort sustained by the Holy Spirit until perfection is reached at the resurrection. The same hope that motivates purification also produces holiness of conduct. Those who keep their eyes on the eternal realities above set their minds against worldly influences and press toward the goal of being like Christ now. In this way purification is both the evidence and the means of preparing to meet Him without shame, clothed in the righteous deeds that mark the bride made ready for the Lamb.

Everyone who has the hope of being like Jesus Christ when He is revealed purifies himself just as He is pure. This hope, grounded in the Father's love that makes believers children of God and in their present union with Christ, supplies the motive and direction for purification. Because they are already sons of God by grace and destined to share Christ's moral and spiritual character, they actively work to remove every trace of sin from their conduct and inward nature. Purification proceeds by daily examination, imitation of Christ's example, prayer for a tender conscience, flight from temptation, and deliberate rejection of worldly influences. It is an ongoing process of sanctification in which the believer, empowered by the indwelling Holy Spirit, puts away greater sins first, then guards against recurring faults and family weaknesses, while setting the mind on things above. The same hope that drives this activity also serves as its test: where genuine expectation of conformity to Christ exists, purification follows as its necessary expression. Thus purification is never undertaken to earn sonship or to attain some higher state; it flows directly from the reality that believers are already children of God and will one day see Him as He is.

The law of clean and unclean meats forms part of a broader system of statutes designed to guard against physical and spiritual impurity, thereby enabling the pursuit of holiness without which no one will see the Lord. This principle of sanctification requires separation from what defiles, setting God's people apart for His special purpose in the same manner that He Himself is holy. As spiritual Israelites comprising the church, believers bear the ongoing responsibility to perfect holiness in every area of life, including both flesh and spirit, by cleansing themselves from all defilement. The requirement did not originate with the Old Covenant but was already known and observed prior to that time, establishing its enduring validity independent of covenantal changes. God Himself provides the specific criteria for identifying clean and unclean foods so that His people may maintain the distinction He commands. Christ addressed only the added tradition of ritual handwashing when questioned about defilement and did not nullify the law of clean and unclean meats, while Peter's vision clarified that no person should be regarded as common or unclean. Paul likewise dealt solely with the matter of clean meats offered to idols and the need for sensitivity toward a brother's conscience rather than any alteration of the distinction between clean and unclean. In the coming Kingdom this same law will remain active, as the priesthood will continue to teach the difference between the clean and the unclean, ensuring that nothing defiling enters the New Jerusalem where all citizens will be holy.