Exodus 34:22-26

22— And thou shalt observe the feast of weeks, of the first-fruits of wheat-harvest, and the feast of ingathering at the turn of the year.

23Thrice in the year shall all thy males appear before the Lord Jehovah, the 1God of Israel.

24For I will dispossess the nations before thee, and enlarge thy border, and no man shall desire thy land, when thou goest up to appear before the face of Jehovah thy 2God 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 over night until the morning.

26— The first of the first-fruits of thy land shalt thou bring into the house of Jehovah thy 3God. Thou shalt not boil a kid in its mother's milk.