The instructions for the Feast of Unleavened Bread connect its observance directly to the memorial of Israel's departure from Egypt. God repeatedly ties the command to keep the Feast to the events of the month of Abib, when He brought the children of Israel out of the land of Egypt. Multiple passages stress this link by noting that the people came out from Egypt at that appointed time, yet the wording highlights God's own action rather than any independent effort on Israel's part. Although the Israelites walked away from slavery, they did so only because God first devastated their captors and then led them by a pillar of cloud by day and a pillar of fire by night. The instructions therefore place the emphasis on divine intervention as the true cause of the departure. This focus on God's activity forms the foundation for the Feast's broader purpose, supplying the means by which His people are enabled to put sin out of their lives.

The memorial of leaving Egypt centers on the command to remember the day God brought Israel out of bondage by strength of hand, establishing it as a recurring sign on the hand and memorial between the eyes so that His instruction remains in the mouth. This observance requires eating unleavened bread for seven days with no leaven visible anywhere, performed each year from generation to generation as a service that reinforces political liberty as a type of spiritual freedom from slavery. The practice links directly to telling children that the action commemorates what the Lord accomplished in the exodus, ensuring the event functions as an object lesson that keeps the mind focused on the obligation to avoid sin, represented by leaven, in order to remain free. The same memorial appears in the instruction to eat the bread of affliction so that the day of coming out of Egypt is remembered all the days of life, thereby connecting the physical removal of leaven to the ongoing responsibility of purging old teachings, habits, and attitudes that produce bondage. Through repeated drills of putting out leaven and eating unleavened bread, the memorial engraves on the character the understanding that God grants liberty and that continued freedom depends on actively rejecting what leads back into captivity. This repetition counters the human tendency to forget quickly, turning passive knowledge into ingrained procedure that shapes judgments and choices. In this way the memorial sustains the broader purpose of the Days of Unleavened Bread by training participants to become doers rather than forgetful hearers, producing the self-mastery, integrity, and godliness that keep the redeemed in the state of liberty God intends.

The memorial of leaving Egypt was established when Moses instructed the people to remember the day of their departure from bondage, accomplished by the strength of the Lord's hand. For seven days unleavened bread was to be eaten, with a feast held on the seventh day, and no leavened bread was permitted anywhere among them. This observance was to serve as a sign on the hand and a memorial between the eyes so that the Lord's law would remain in the mouth, continually recalling the deliverance from Egypt. The instructions emphasize remembrance of release from bondage, the requirement to eat unleavened bread throughout the period, and the placement of the law in the mouth as evidence of that deliverance. Egypt stands as a type of the satanic society under the influence of sin, so the memorial conveys the lesson that only God can free people from sin's bondage, grant salvation, and lead them into His Kingdom. The exodus itself points to Jesus Christ as the way out of sin and its bondage, while the eating of unleavened bread represents feeding on Him as the truth and the Word made flesh. The Night to be Much Observed commemorates the departure from Egypt and, for spiritual Israel, recalls the calling through Christ's sacrifice that delivers from sin and death by grace. The law in the mouth identifies the redeemed as a kingdom of priests who will instruct the world in God's law during the Millennium, when the law goes forth from Zion. Thus the memorial of leaving Egypt pictures the plan of salvation for the firstfruits, who are drawn to Christ, nourished by His truth, and prepared to serve as reigning priests with the Lord's law in their mouth.