Exodus 34:18-28

18The feast of unleavened bread shalt thou keep. Seven days shalt thou eat unleavened bread, as I commanded thee, in the time of the month Abib: for in the month Abib thou camest out of from Egypt. 19All that openeth the womb is mine; and every firstling among thy cattle, whether ox or sheep, that is male .1 20But the firstling of a donkey thou shalt redeem with a lamb: and if thou shalt not redeem him, then shalt thou break his neck. All the firstborn of thy sons thou shalt redeem. And none shall appear before me empty.2 21Six days thou shalt work, but on the seventh day thou shalt rest: in time of plowing 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.3 23Three times in the year shall all your males appear before the Lord GOD, the God of Israel. 24For I will drive 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 three times 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 until the morning. 26The first of the firstfruits of thy land thou shalt bring to the house of the LORD thy God. Thou shalt not boil a kid in his mother’s milk. 27And the LORD said to Moses, Write thou these words: for after the tenor of these words I have made a covenant with thee and with Israel.

28And he was there with the LORD forty days and forty nights; he neither ate bread, nor drank water. And he wrote upon the tables the words of the covenant, the ten commandments.4