Exodus 34:23-25

Authorized (King James) Version

²³ Thrice in the year shall all your men children appear before the Lord God, the God of Israel. ²⁴ 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.

²⁵ Thou shalt not offer the blood of my sacrifice with leaven; neither shall the sacrifice of the feast of the passover be left unto the morning.