“Three times in the year you shall hold a festival for me. You shall observe the festival of unleavened bread. As I commanded you, you shall eat unleavened bread for seven days at the appointed time in the month of Abib, for in it you came out of Egypt. None shall appear before me empty-handed.”
1) The festival of unleavened bread is seven days in the month of Abib.
“You shall observe the festival of harvest, of the first fruits of your labor, of what you sow in the field. You shall observe the festival of ingathering at the end of the year, when you gather in from the field the fruit of your labor. Three times in the year all your males shall appear before Yahweh God.”
2) The festival of harvest is the first fruits of your labor, the festival of weeks or Pentecost in spring time.
3) The festival of ingathering is the festival of booths, at the end of the year in autumn.
“You shall not offer the blood of my sacrifice with anything leavened, or let the fat of my festival remain until the morning. The choicest of the first fruits of your ground you shall bring into the house of Yahweh your God. You shall not boil a kid in its mother’s milk.”
There are three major festivals for Israel, but they do include Passover or Yom Kippur. They are the festivals: (1) of unleavened bread, seven days in the month of Abib; (2) of harvest, first fruits of your labor, festival of weeks or Pentecost; and (3) of ingathering, festival of booths, at the end of the year, autumn. Only the best should be presented to Yahweh. Nothing must remain for the next day. The admonition about not boiling a kid in its mother’s milk refers to a Canaanite sacrifice practice.