Exodus 34:23-25

Modern English Version

²³ Three times in the year all your males must appear before the Lord God, the God of Israel. ²⁴ For I will drive out the nations before you and enlarge your borders. No man will covet your land when you go up to appear before the Lord your God three times in the year.

²⁵ You must not offer the blood of My sacrifice with leaven, nor is the sacrifice of the Feast of the Passover to be left until the following morning.