Exodus 34:22

“Keep the Feast of Weeks with the first cutting of the wheat harvest, and the Feast of Ingathering at the turn of the year.

^23-24 “All your men are to appear before the Master, the God of Israel, three times a year. You won’t have to worry about your land when you appear before your God three times each year, for I will drive out the nations before you and give you plenty of land. Nobody’s going to be hanging around plotting ways to get it from you.