Exodus 11:1

Then the LORD said to Moses, “I will bring upon Pharaoh and Egypt one more plague. After that, he will allow you to leave this place. And when he lets you go, he will drive you out completely.

And the LORD said unto Moses, Yet will I bring one plague more upon Pharaoh, and upon Egypt; afterwards he will let you go hence: when he shall let you go, he shall surely thrust you out hence altogether.