Catena Aurea on Matthew 5:43–48: Augustine of Hippo

These indeed are examples of the perfect sons of God; yet to this should every believer aim, and seek by prayer to God, and struggles with himself to raise his human spirit to this tempter. Yet this so great blessing is not given to all those multitudes which we believe are heard when they pray, “Forgive us our debts, as we forgive our debtors.”