Charles Spurgeon Commentary Romans 3:3-5

"For what if some were without faith? shall their want of faith make of none effect the faithfulness of God? God forbid: yea, let God be found true, but every man a liar; as it is written, That thou mightest be justified in thy words, And mightest prevail when thou comest into judgment. But if our righteousness commendeth the righteousness of God, what shall we say? Is God unrighteous who visiteth with wrath? (I speak after the manner of men.)" — Romans 3:3-5 (ASV)

Shall their unbelief make the faith of God without effect? 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. But if our unrighteousness commend the righteousness of God, what shall we say? Is God unrighteous who takes vengeance?

Vengeance on a sin which is nevertheless made to turn to His glory?