Exodus 34:22-26

22“Observe the Festival of Weeks with the firstfruits of the wheat harvest, and the Festival of Ingathering at the turn of the agricultural year.

23Three times a year all your males are to appear before the Lord God, the God of Israel.

24For I will drive out nations before you and enlarge your territory. No one will covet your land when you go up three times a year to appear before the Lord your God.

25“Do not present the blood for my sacrifice with anything leavened. The sacrifice of the Passover Festival must not remain until morning.

26“Bring the best firstfruits of your land to the house of the Lord your God. “You must not boil a young goat in its mother’s milk.”