You shall observe the festival of weeks, the first fruits of wheat harvest, and the festival of ingathering at the turn of the year.
Three times in the year all your males shall appear before the Lord God, the God of Israel.
For I will cast out nations before you, and enlarge your borders; no one shall covet your land when you go up to appear before the Lord your God three times in the year.
You shall not offer the blood of my sacrifice with leaven, and the sacrifice of the festival of the passover shall not be left until the morning.
The best of the first fruits of your ground you shall bring to the house of the Lord your God. You shall not boil a kid in its mother's milk.
The Lord said to Moses: Write these words; in accordance with these words I have made a covenant with you and with Israel.
He was there with the Lord forty days and forty nights; he neither ate bread nor drank water. And he wrote on the tablets the words of the covenant, the ten commandments.
References for Exodus 34:28
Moses came down from Mount Sinai. As he came down from the mountain with the two tablets of the covenant in his hand, Moses did not know that the skin of his face shone because he had been talking with God.
References for Exodus 34:29
When Aaron and all the Israelites saw Moses, the skin of his face was shining, and they were afraid to come near him.
But Moses called to them; and Aaron and all the leaders of the congregation returned to him, and Moses spoke with them.
Afterward all the Israelites came near, and he gave them in commandment all that the Lord had spoken with him on Mount Sinai.