'Unless' in the Bible

By this ye shall be put to the proof: as Pharaoh lives, ye shall not go forth hence, unless your youngest brother come hither!

And Judah spoke to him, saying, The man did positively testify to us, saying, Ye shall not see my face, unless your brother be with you.

but if thou do not send him, we will not go down, for the man said to us, Ye shall not see my face, unless your brother be with you.

And thou saidst to thy servants, Unless your youngest brother come down with you, ye shall see my face no more.

But we said, We cannot go down: if our youngest brother be with us, then will we go down; for we cannot see the man's face unless our youngest brother is with us.