Exodus 7:3
Ver. 3. And I will harden Pharaoh's heart,.... See Gill on "Ex 4:21"
and multiply my signs and my wonders in the land of Egypt; work one miracle and wonderful sign after another, until they are all wrought intended to be wrought; and which he had given Moses power to do, and until the end should be answered and obtained, the letting go of the children of Israel.