Exodus 34:23-25

New Century Version

²³ “Three times each year all your males must come before the Lord God, the God of Israel. ²⁴ I will force out nations ahead of you and expand the borders of your land. You will go before the Lord your God three times each year, and at that time no one will try to take your land from you.

²⁵ “Do not offer the blood of a sacrifice to me with anything containing yeast, and do not leave any of the sacrifice of the Feast of Passover until the next morning.