Exodus 34:16-18

New Revised Standard Version Catholic Edition

¹⁶ And you will take wives from among their daughters for your sons, and their daughters who prostitute themselves to their gods will make your sons also prostitute themselves to their gods.

¹⁷ You shall not make cast idols.

¹⁸ You shall keep the festival of unleavened bread. Seven days you shall eat unleavened bread, as I commanded you, at the time appointed in the month of Abib; for in the month of Abib you came out from Egypt.