Exodus 34:23

²¹Six days thou shalt work, but on the seventh day thou shalt rest: in earing time and in harvest thou shalt rest.

²²And thou shalt observe the feast of weeks, of the firstfruits of wheat harvest, and the feast of ingathering at the year’s end.

— Exodus 34:23 —

²⁴For I will cast out the nations before thee, and enlarge thy borders: neither shall any man desire thy land, when thou shalt go up to appear before the LORD thy God thrice in the year.

²⁵Thou shalt not offer the blood of my sacrifice with leaven; neither shall the sacrifice of the feast of the passover be left unto the morning.