Charles Ellicott Commentary Leviticus 23:37

"These are the set feasts of Jehovah, which ye shall proclaim to be holy convocations, to offer an offering made by fire unto Jehovah, a burnt-offering, and a meal-offering, a sacrifice, and drink-offerings, each on its own day;" — Leviticus 23:37 (ASV)

These are the feasts of the Lord. —This means the six festivals mentioned previously, namely:

1. The Passover (Leviticus 23:4–14)
2. Pentecost (Leviticus 23:15–22)
3. New Year (Leviticus 23:23–25)
4. The Day of Atonement (Leviticus 23:26–32)
5. Tabernacles (Leviticus 23:33–36a)
6. The concluding festival (Leviticus 23:36b)

Thus, this list of festivals concludes with the formula by which they were introduced in Leviticus 23:4.

To offer an offering. —On these festivals sacrifices are to be offered as prescribed in Numbers 28:29.