Exodus 34:23-27

Three times a year all your males are to appear before the Lord God, the God of Israel.

For I will drive out nations from you and enlarge your borders, and no one will covet your land when you go up three times a year to appear before the Lord your God.

“You shall not offer the blood of My sacrifice with leavened bread, nor is the sacrifice of the Feast of the Passover to be left over until morning.

“You shall bring the very first of the first fruits of your soil into the house of the Lord your God. “You shall not boil a young goat in its mother’s milk.”

Then the Lord said to Moses, “Write down these words, for in accordance with these words I have made a covenant with you and with Israel.”