Charles H. Spurgeon on Psalms 15:5

"He that putteth not out his money to usury." Usury was and is hateful both to God and man. That a lender should share with the borrower in gains made by his money is most fitting and proper; but that the man of property should eat up the poor wretch who unfortunately obtained a loan of him is abominable. Those who grind poor tradesmen, needy widows, and such like, by charging them interest at intolerable rates, will find that their gold, and their silver are cankered. The man who shall ascend into the hill of the Lord must shake off this sin as Paul shook the viper into the fire. "Nor taketh reward against the innocent." Bribery is a sin both in the giver and the receiver. It was frequently practised in Eastern courts of justice; that form of it is now under our excellent judges almost an unheard-of thing; yet the sin survives in various forms, which the reader needs not that we should mention; and under every shape it is loathsome to the true man of God. He remembers that Jesus instead of taking reward against the innocent died for the guilty.