Romans 3:3-4 For what if some did not believe? Surely their unbelief will not nullify the faithfulness of God?

CAB⁽ⁱ⁾ ³ For what if some did not believe? Surely their unbelief will not nullify the faithfulness of God? ⁴ Certainly not! Indeed, let God be true but every man a liar, just as it is written: "That You may be justified in Your words, and You may overcome when You are judged."