Exodus 34:18-35

“You must celebrate the Festival of Unleavened Bread. For seven days the bread you eat must be made without yeast, just as I commanded you. Celebrate this festival annually at the appointed time in early spring, in the month of Abib, for that is the anniversary of your departure from Egypt. “The firstborn of every animal belongs to me, including the firstborn males from your herds of cattle and your flocks of sheep and goats. A firstborn donkey may be bought back from the LORD by presenting a lamb or young goat in its place. But if you do not buy it back, you must break its neck. However, you must buy back every firstborn son. “No one may appear before me without an offering. “You have six days each week for your ordinary work, but on the seventh day you must stop working, even during the seasons of plowing and harvest. “You must celebrate the Festival of Harvest with the first crop of the wheat harvest, and celebrate the Festival of the Final Harvest at the end of the harvest season. Three times each year every man in Israel must appear before the Sovereign, the LORD, the God of Israel. I will drive out the other nations ahead of you and expand your territory, so no one will covet and conquer your land while you appear before the LORD your God three times each year. “You must not offer the blood of my sacrificial offerings together with any baked goods containing yeast. And none of the meat of the Passover sacrifice may be kept over until the next morning. “As you harvest your crops, bring the very best of the first harvest to the house of the LORD your God. “You must not cook a young goat in its mother’s milk.” Then the LORD said to Moses, “Write down all these instructions, for they represent the terms of the covenant I am making with you and with Israel.” Moses remained there on the mountain with the LORD forty days and forty nights. In all that time he ate no bread and drank no water. And the LORD wrote the terms of the covenant—the Ten Commandments—on the stone tablets. When Moses came down Mount Sinai carrying the two stone tablets inscribed with the terms of the covenant, he wasn’t aware that his face had become radiant because he had spoken to the LORD. So when Aaron and the people of Israel saw the radiance of Moses’ face, they were afraid to come near him. But Moses called out to them and asked Aaron and all the leaders of the community to come over, and he talked with them. Then all the people of Israel approached him, and Moses gave them all the instructions the LORD had given him on Mount Sinai. When Moses finished speaking with them, he covered his face with a veil. But whenever he went into the Tent of Meeting to speak with the LORD, he would remove the veil until he came out again. Then he would give the people whatever instructions the LORD had given him, and the people of Israel would see the radiant glow of his face. So he would put the veil over his face until he returned to speak with the LORD.