Leviticus 23:2, 4, 6, 10, 34

“Speak to the people of Israel and say to them, These are the appointed feasts of the LORD that you shall proclaim as holy convocations; they are my appointed feasts.

“These are the appointed feasts of the LORD, the holy convocations, which you shall proclaim at the time appointed for them.

And on the fifteenth day of the same month is the Feast of Unleavened Bread to the LORD; for seven days you shall eat unleavened bread.

“Speak to the people of Israel and say to them, When you come into the land that I give you and reap its harvest, you shall bring the sheaf of the firstfruits of your harvest to the priest

“Speak to the people of Israel, saying, On the fifteenth day of this seventh month and for seven days is the Feast of Booths to the LORD.