Exodus 4:18-23

King James Version

¹⁸ And Moses went and returned to Jethro his father in law, and said unto him, Let me go, I pray thee, and return unto my brethren which are in Egypt, and see whether they be yet alive. And Jethro said to Moses, Go in peace.

¹⁹ And the Lord said unto Moses in Midian, Go, return into Egypt: for all the men are dead which sought thy life.

²⁰ And Moses took his wife and his sons, and set them upon an ass, and he returned to the land of Egypt: and Moses took the rod of God in his hand.

²¹ And the Lord said unto Moses, When thou goest to return into Egypt, see that thou do all those wonders before Pharaoh, which I have put in thine hand: but I will harden his heart, that he shall not let the people go.

²² And thou shalt say unto Pharaoh, Thus saith the Lord, Israel is my son, even my firstborn:

²³ And I say unto thee, Let my son go, that he may serve me: and if thou refuse to let him go, behold, I will slay thy son, even thy firstborn.