Exodus 34
22 Ref And thou shalt observe the feast of weeks, of the firstfruits of wheat harvest, and the feast of ingathering at the year's end.
23 Ref Thrice in the year shall all your men children appear before the LORD God, the God of Israel.
24 Ref For I will cast out the nations before thee, and enlarge thy borders: neither shall any man desire thy land, when thou shalt go up to appear before the LORD thy God thrice in the year.