You shall not charge interest to your brother; interest on money, interest on food, interest on anything that is lent for interest:
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Ambrose of Milan
AD 397
[Scripture] orders money to be returned without usury. It is a mark of kindly feeling to help one who has nothing. It is a sign of a hard nature to extort more than one has given. If one has need of your assistance because he has not enough of his own wherewith to repay a debt, is it not a wicked thing to demand under the guise of kindly feeling a larger sum from him who has not the means to pay off a lesser amount? Duties of the Clergy.
