Exodus 23:13-17

Now concerning everything which I have said to you, be careful; and do not mention the name of other gods, nor let them be heard from your mouth. Three National Feasts

“Three times a year you shall celebrate a feast to Me.

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.