But for us also, to whom it shall be imputed, if we believe on him that raised up Jesus our Lord from the dead;
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Ambrosiaster
AD 400
Although what is now believed is different, faith has one and the same gift. Therefore we receive this gift because we believe. And believing that Christ is the Son of God, we are adopted as sons, for God could give no greater gift to believers than to call them sons of God once they had renounced their sins. For we are called “sons of God,” but they are not worthy even to be called servants. Commentary on Paul’s Epistles.