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.But at the place which the Lord thy God shall choose to place his name in,.... To place the ark and the mercy seat with the cherubim over them, where he caused his Shechinah, or divine Majesty, to dwell; and this was at Jerusalem, where the temple was built by Solomon:

there thou shalt sacrifice the passover; kill and eat the paschal lamb:

at even, at the going down of the sun; between the two evenings it was killed, before the sun was set, and afterwards at night it was eaten; the Targum of Jonathan is,"and at evening, at the setting of the sun, ye shall eat it until the middle of the night:"

at the season that thou camest forth out of Egypt; or as the same Targum,"the time of the beginning of your redemption out of Egypt;''which was when Pharaoh rose at midnight, and gave them leave to go; from thence their redemption commenced, though they did not actually set out until the morning.