Exodus 7:20

7:20 Moses and Aaron did so, just as the Lord had commanded. Moses raised the staff and struck the water that was in the Nile right before the eyes of Pharaoh and his servants, and all the water that was in the Nile was turned to blood.

Exodus 12:27

12:27 then you will say, ‘It is the sacrifice of the Lord’s Passover, when he passed over the houses of the Israelites in Egypt, when he struck Egypt and delivered our households.’” The people bowed down low to the ground,

Exodus 21:19

21:19 and then if he gets up and walks about outside on his staff, then the one who struck him is innocent, except he must pay for the injured person’s loss of time and see to it that he is fully healed.