'God Forbid' in the Bible

God forbid. For if I build again the things which I destroyed, I make myself a transgressor.

Is then the law against the promises of God? God forbid. But if there had been a law given which could have given life, verily righteousness would have been by the law.

But God forbid that I should glory, save in the cross of our Lord Jesus Christ, by which the world is crucified to me, and I unto the world.