Exodus 3:19

And I am sure that the king of Egypt will not let you go, no, not by a mighty hand.
— Exodus 3:19, King James Version

In other translations

World English Bible (WEB)

I know that the king of Egypt won't give you permission to go, no, not by a mighty hand.

American Standard Version (ASV)

And I know that the king of Egypt will not give you leave to go, no, not by a mighty hand.

Young's Literal Translation (YLT)

'And I--I have known that the king of Egypt doth not permit you to go, unless by a strong hand,