Berean Study Bible
But I know that the king of Egypt will not allow you to go unless a mighty hand compels him.

King James Bible
And I am sure that the king of Egypt will not let you go, no, not by a mighty hand.

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

Darby Bible Translation
But I know that the king of Egypt will not let you go, no, not by a powerful hand.

Douay-Rheims Bible
But I know that the king of Egypt will not let you go, but by a mighty hand.

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