Romans 3:3-4 For what if some did not believe? shall their unbelief make the faithfulness of God without effect?

KJ2000⁽ⁱ⁾ ³ For what if some did not believe? shall their unbelief make the faithfulness of God without effect? ⁴ God forbid: yea, let God be true, but every man a liar; as it is written, That you might be justified in your sayings, and might overcome when you are judged.