4. Mose 28:16

The same number of sacrifices as at the new moon were to be offered on every one of the seven days of the feast of unleavened bread (Mazzoth), from the 15th to the 21st of the month, whereas there was no general festal offering on the day of the Passover, or the 14th of the month (Exo 12:3-14). With regard to the feast of Mazzoth, the rule is repeated from Exo 12:15-20 and Lev 23:6-8, that on the first and seventh day there was to be a Sabbath rest and holy meeting.

Here is, I. The appointment of the pass-over sacrifices; not that which was the chief, the paschal lamb (sufficient instructions had formerly been given concerning that), but those which were to be offered upon the seven days of unleavened bread, which followed it, Num 28:17-25. The first and last of those seven days were to be sanctified as sabbaths, by a holy rest and a holy convocation, and on each of the seven days they were to be liberal in their sacrifices, in token of their great and constant thankfulness for their deliverance out of Egypt: Two bullocks, a ram, and seven lambs. A gospel conversation, in gratitude for Christ our passover who was sacrificed, is called the keeping of this feast (Co1 5:8); for it is not enough that we purge out the leavened bread of malice and wickedness, but we must offer the bread of our God, even the sacrifice of praise, continually, and continue herein unto the end. 2. The sacrifices are likewise appointed which were to be offered at the feast of pentecost, here called the day of the first-fruits, Num 28:26. In the feast of unleavened bread they offered a sheaf of their first-fruits of barley (which with them was first ripe) to the priest (Lev 23:10), as an introduction to the harvest; but now, about seven weeks after, they were to bring a new meat-offering to the Lord, at the end of harvest, in thankfulness to God, who had not only given, but preserved to their use, the kindly fruits of the earth, so as that in due time they did enjoy them. It was at this feast that the Spirit was poured out (Act 2:1, etc.), and thousands were converted by the preaching of the apostles, and were presented to Christ, to be a kind of first-fruits of his creatures. The sacrifice that was to be offered with the loaves of the first-fruits was appoint…

28:16-25 The Passover, followed by the Festival of Unleavened Bread, was the first of five great annual festivals; it was held in early spring (March~April). The Passover required no public sacrifices—it was a family occasion celebrated at home (see also 9:1-4; Exod 12:1–13:10; Lev 23:5-8; Deut 16:1-8). This festival played a special role in the background of the Last Supper (see Matt 26:17-19, 26-27; Mark 14:12; John 11:55; 12:1; 13:1; 18:28, 39; 19:14, 31; cp. 1 Cor 5:7).