161 Observe the month of Abib, and keep the Passover to Yahweh your God; for in the month of Abib Yahweh your God brought you forth out of Egypt by night. 2 You shall sacrifice the Passover to Yahweh your God, of the flock and the herd, in the place which Yahweh shall choose, to cause his name to dwell there. 3 You shall eat no leavened bread with it. You shall eat unleavened bread with it seven days, even the bread of affliction; for you came forth out of the land of Egypt in haste: that you may remember the day when you came forth out of the land of Egypt all the days of your life. 4 There shall be no yeast seen with you in all your borders seven days; neither shall any of the flesh, which you sacrifice the first day at even, remain all night until the morning. 5 You may not sacrifice the Passover within any of your gates, which Yahweh your God gives you; 6 but at the place which Yahweh your God shall choose, to cause his name to dwell in, there you shall sacrifice the Passover at even, at the going down of the sun, at the season that you came forth out of Egypt.
Matthew Henry's Commentary on Deuteronomy 16:1-6
Commentary on Deuteronomy 16:1-17
(Read Deuteronomy 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.