Exodus 4:10-23

And Moses said unto Jehovah, Oh, Lord, I am not eloquent, neither heretofore, nor since thou hast spoken unto thy servant; for I am slow of speech, and of a slow tongue. And Jehovah said unto him, Who hath made man’s mouth? or who maketh a man dumb, or deaf, or seeing, or blind? is it not I, Jehovah? Now therefore go, and I will be with thy mouth, and teach thee what thou shalt speak. And he said, Oh, Lord, send, I pray thee, by the hand of him whom thou wilt send. And the anger of Jehovah was kindled against Moses, and he said, Is there not Aaron thy brother the Levite? I know that he can speak well. And also, behold, he cometh forth to meet thee: and when he seeth thee, he will be glad in his heart. And thou shalt speak unto him, and put the words in his mouth: and I will be with thy mouth, and with his mouth, and will teach you what ye shall do. And he shall be thy spokesman unto the people; and it shall come to pass, that he shall be to thee a mouth, and thou shalt be to him as God. And thou shalt take in thy hand this rod, wherewith thou shalt do the signs. 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 that are in Egypt, and see whether they be yet alive. And Jethro said to Moses, Go in peace. And Jehovah said unto Moses in Midian, Go, return into Egypt; for all the men are dead that sought thy life. 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. And Jehovah said unto Moses, When thou goest back into Egypt, see that thou do before Pharaoh all the wonders which I have put in thy hand: but I will harden his heart and he will not let the people go. And thou shalt say unto Pharaoh, Thus saith Jehovah, Israel is my son, my first-born: and I have said unto thee, Let my son go, that he may serve me; and thou hast refused to let him go: behold, I will slay thy son, thy first-born.