Exodus 3:17-18

So I said, I will bring you up out of the affliction of Egypt to the land of the Canaanite and the Hittite and the Amorite and the Perizzite and the Hivite and the Jebusite, to a land flowing with milk and honey.” ’ They will pay heed to what you say; and you with the elders of Israel will come to the king of Egypt and you will say to him, ‘The LORD, the God of the Hebrews, has met with us. So now, please, let us go a three days’ journey into the wilderness, that we may sacrifice to the LORD our God.’