Augustine of Hippo
What is usury if not sin, often referred to as debts? (Matthew 6:12) It seems they were termed usurers because the penalties linked to these acts contain more wickedness than the sins themselves. For instance, a murderer may take the life of a person, but cannot touch the soul; both the soul and body will meet their end in hell. This occurs for those who disregard the present commandment and mock the future judgment, as it is written, “I, coming, would require usury” (Matt. 25:27). From this usury, the souls of the impoverished are redeemed by the blood shed for the forgiveness of sins. He redeems, I assert, from usury through the remission of sins that carry harsher consequences; yet, He also redeems from wickedness, empowering them with grace to perform righteousness.
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Thus, the same two themes reappear as previously mentioned. In what was stated above, He shows mercy to the weak and needy man, implied in the context of usury; likewise, in the assertion that He will save the souls of the poor, which pertains to iniquity. The phrase "He will redeem" thus applies in both instances. So, when He exercises mercy toward the poor and defenseless and saves the souls of the needy, He will redeem them from both usury and iniquity. His name will be held in honor before them. They will glorify His name for such immense gifts and acknowledge that it is fitting and just to give thanks to the Lord their God. Alternatively, as noted in certain accounts, “And their name shall be glorious before Him.” Although Christians may be viewed as insignificant in this world, their name shines brightly before Him who bestowed it, forgetting the titles by which they were once known, held captive by the beliefs of the pagans or marked by names reflective of their past sins prior to their conversion. This name is esteemed in His sight, even if it appears beneath contempt to their adversaries.