Exodus 5:1-3

Opposition to the Plan of God

5:1 Afterward Moses and Aaron went to Pharaoh and said, “Thus says the Lord, the God of Israel, ‘Release my people so that they may hold a pilgrim feast to me in the desert.’” 5:2 But Pharaoh said, “Who is the Lord that I should obey him by releasing Israel? I do not know the Lord, and I will not release Israel!” 5:3 And they said, “The God of the Hebrews has met with us. Let us go a three-day journey into the desert so that we may sacrifice to the Lord our God, so that he does not strike us with plague or the sword.”

Exodus 7:10

7:10 When Moses and Aaron went to Pharaoh, they did so, just as the Lord had commanded them – Aaron threw down his staff before Pharaoh and his servants and it became a snake.