Exodus 23:15-19

You shall keep the Feast of Unleavened Bread; for seven days you are to eat unleavened bread, as I commanded you, at the appointed time in the month of Abib, for in that month you came out of Egypt. And no one is to appear before Me empty-handed.

Also you shall keep the Feast of the Harvest of the first fruits of your labors from what you sow in the field; also the Feast of the Ingathering at the end of the year when you gather in the fruit of your labors from the field.

Three times a year all your males shall appear before the Lord God.

“You shall not offer the blood of My sacrifice with leavened bread; nor is the fat of My feast to remain overnight until morning.

“You shall bring the choice first fruits of your soil into the house of the Lord your God. “You are not to boil a young goat in the milk of its mother. Conquest of the Land