Exodus 34:22-24

Living Bible

²² “And you must remember to celebrate these three annual religious festivals: the Festival of Weeks, the Festival of the First Wheat, and the Harvest Festival. ²³ On each of these three occasions all the men and boys of Israel shall appear before the Lord. ²⁴ No one will attack and conquer your land when you go up to appear before the Lord your God those three times each year. For I will drive out the nations from before you and enlarge your boundaries.