3:18 “The elders will listen to you, and then you and the elders of Israel must go to the king of Egypt and tell him, ‘The Lord, the God of the Hebrews, has met with us. So now, let us go three days’ journey into the wilderness, so that we may sacrifice to the Lord our God.’
4:18 So Moses went back to his father-in-law Jethro and said to him, “Let me go, so that I may return to my relatives in Egypt and see if they are still alive.” Jethro said to Moses, “Go in peace.”
8:29 Moses said, “I am going to go out from you and pray to the Lord, and the swarms of flies will go away from Pharaoh, from his servants, and from his people tomorrow. Only do not let Pharaoh deal falsely again by not releasing the people to sacrifice to the Lord.”