Exodus 5:1-2 New International Version (NIV)

1. Afterward Moses and Aaron went to Pharaoh and said, “This is what the Lord, the God of Israel, says: ‘Let my people go, so that they may hold a festival to me in the wilderness.’ ”

2. Pharaoh said, “Who is the Lord, that I should obey him and let Israel go? I do not know the Lord and I will not let Israel go.”

Exodus 5