Exodus 4:21-23

Modern English Version

²¹ The Lord said to Moses, “When you go to return into Egypt, see that you do all those wonders before Pharaoh, which I have put in your hand, but I will harden his heart, so that he shall not let the people go. ²² You shall say to Pharaoh, ‘Thus says the Lord: Israel is My son, even My firstborn. ²³ So I say to you, “Let My son go, that he may serve Me. And if you refuse to let him go, I will slay your son, even your firstborn.” ’ ”