'Unless' in the Bible

Then the man said, "Let me go, for the dawn is breaking." "I will not let you go," Jacob replied, "unless you bless me."

You will be tested in this way: As surely as Pharaoh lives, you will not depart from this place unless your youngest brother comes here.

But Judah said to him, "The man solemnly warned us, 'You will not see my face unless your brother is with you.'

But if you will not send him, we won't go down there because the man said to us, 'You will not see my face unless your brother is with you.'"