And thou shalt remember that thou wast a bondman in Egypt,.... And now delivered from that bondage; the consideration of which should make them liberal in their freewill offering, and generous in the feast they provided, and compassionate to the stranger, widow, and fatherless:

and thou shalt observe and do these statutes; concerning the passover, the feast of unleavened bread, and of Pentecost, and the peace offerings and the freewill offerings belonging to them: and nothing could more strongly oblige them to observe them than their redemption from their bondage in Egypt; as nothing more engages to the performance of good works than the consideration of our spiritual and eternal redemption by Christ, 1 Corinthians 6:19.

And thou shalt remember that thou wast a bondman in Egypt: and thou shalt observe and do these statutes.

16:1-17 The laws for the three yearly feasts are here repeated; that of the Passover, that of the Pentecost, that of Tabernacles; and the general law concerning the people's attendance. Never should a believer forget his low estate of guilt and misery, his deliverance, and the price it cost the Redeemer; that gratitude and joy in the Lord may be mingled with sorrow for sin, and patience under the tribulations in his way to the kingdom of heaven. They must rejoice in their receivings from God, and in their returns of service and sacrifice to him; our duty must be our delight, as well as our enjoyment. If those who were under the law must rejoice before God, much more we that are under the grace of the gospel; which makes it our duty to rejoice evermore, to rejoice in the Lord always. When we rejoice in God ourselves, we should do what we can to assist others also to rejoice in him, by comforting the mourners, and supplying those who are in want. All who make God their joy, may rejoice in hope, for He is faithful that has promised.