Exodus 7:12-14

Amplified Bible

¹² For every ^[a]man threw down his staff and they turned into serpents; but Aaron’s staff swallowed up their staffs. ¹³ Yet Pharaoh’s heart was hardened and he would not listen to them, just as the Lord had said.

Water Is Turned to Blood

¹⁴ Then the Lord said to Moses, “Pharaoh’s heart is hard; he refuses to let the people go.