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.
All Commentaries on Romans 3:4 Go To Romans 3
Ambrose of Milan
AD 397
Does God tell a lie? He does not. It is impossible for God to tell a lie. Is this an impossibility because of some weakness? Certainly not! How could he be the cause of all things if there were something which he could not cause? What then is impossible to him? Nothing that is difficult for his power but only that which is contrary to his nature. It is impossible, it is said, for him to tell a lie. The impossibility comes not from weakness but from his power and greatness, for truth admits of no lie.