Exodus 5
1 Ref And after that, Moses and Aaron came to Pharaoh, and said, The Lord, the God of Israel, says, Let my people go so that they may keep a feast to me in the waste land.
2 Ref And Pharaoh said, Who is the Lord, to whose voice I am to give ear and let Israel go? I have no knowledge of the Lord and I will not let Israel go.
3 Ref And they said, The God of the Hebrews has come to us: let us then go three days' journey into the waste land to make an offering to the Lord our God, so that he may not send death on us by disease or the sword.