Without understanding, covenant breakers, without natural affection, implacable, unmerciful:
All Commentaries on Romans 1:31 Go To Romans 1
Ambrosiaster
AD 400
They were foolish and faithless and had no feelings either for God or for men. That is why they were heartless and ruthless. For someone who is cruel to his own family will be that much more cruel to others! Commentary on Paul’s Epistles.