Albert Barnes Commentary Leviticus 23:1

"And Jehovah spake unto Moses, saying," — Leviticus 23:1 (ASV)

The specified times for public worship according to the Law were:

1. The daily morning and evening sacrifices, sometimes called the continual burnt-offering.
2. The weekly Sabbath.
3. The day of the new moon.
4. The set feasts (Numbers 29:39) or appointed times of annual observance, of which there were five: the Passover, the Day of Pentecost, the Feast of Trumpets, the Day of Atonement, and the Feast of Tabernacles. For each of these occasions special sacrifices were appointed (Numbers 28; Numbers 29).