Exodus 7:3

Exodus 7:3

And I will harden Pharaoh's heart
(See Gill on Exodus 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.