Exodus 5:1-2

Revised Geneva Translation

5 Then afterward, Moses and Aaron went and said to Pharaoh, “Thus says the LORD God of Israel: ‘Let my people go, so that they may celebrate a feast to Me in the wilderness.’”

² And Pharaoh said, “Who is the ‘LORD’, that I should hear His voice and let Israel go? I do not know the ‘LORD’, nor will I let Israel go.”