Exodus 3:17-20

17and I have promised that I will bring you up out of the affliction of Egypt to the land of the Canaanites, Hittites, Amorites, Perizzites, Hivites, and Jebusites, to a land flowing with milk and honey.”’

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.’

19But I know that the king of Egypt will not let you go, not even under force.

20So I will extend my hand and strike Egypt with all my wonders that I will do among them, and after that he will release you.