Exodus 23:14-17

23:14 “Three times in the year you must make a pilgrim feast to me. 23:15 You are to observe the Feast of Unleavened Bread; seven days you must eat bread made without yeast, as I commanded you, at the appointed time of the month of Abib, for at that time you came out of Egypt. No one may appear before me empty-handed.

23:16 “You are also to observe the Feast of Harvest, the firstfruits of your labors that you have sown in the field, and the Feast of Ingathering at the end of the year when you have gathered in your harvest out of the field. 23:17 At three times in the year all your males will appear before the Lord God.

Deuteronomy 16:16

16:16 Three times a year all your males must appear before the Lord your God in the place he chooses for the Festival of Unleavened Bread, the Festival of Weeks, and the Festival of Temporary Shelters; and they must not appear before him empty-handed.

Deuteronomy 16:1

The Passover-Unleavened Bread Festival

16:1 Observe the month Abib and keep the Passover to the Lord your God, for in that month he brought you out of Egypt by night.

Deuteronomy 9:25

Moses’ Plea on Behalf of the Lord’s Reputation

9:25 I lay flat on the ground before the Lord for forty days and nights, for he had said he would destroy you.