Romans 3:3-4

3:3 For what if some did not believe? shall their unbelief make the faith of God without effect? 3:4 God forbid: yea, let God be true, but every man a liar; as it is written, That thou mightest be justified in thy sayings, and mightest overcome when thou art judged.

Romans 3:6

3:6 God forbid: for then how shall God judge the world?

Romans 3:31

3:31 Do we then make void the law through faith? God forbid: yea, we establish the law.