James 2:6

6Do not the rich. He seems to instigate them to vengeance by bringing forward the unjust rule of the rich, in order that they who were unjustly treated, might render like for like: and yet we are everywhere bid to do good to those who injure us. But the object of James was another; for he only wished to shew that they were without reason or judgment who through ambition honored their executioners, and in the meantime injured their own friends, at least those from whom they never suffered any wrong. For hence appeared more fully their vanity, that they were induced by no acts of kindness: they only admired the rich, because they were rich; nay, they servilely flattered those whom they found, to their own loss, to be unjust and cruel.

There are, indeed, some of the rich who are just, and meek, and hate all unrighteousness; but few of such men are to be found. James, then, mentions what for the most part usually happens, and what daily experience proves true. For as men commonly exercise their power in doing what is wrong, it hence happens, that the more power any one has, the worse he is, and the more unjust towards his neighbors. The more careful then ought the rich to be, lest they should contract any of the contagion which everywhere prevails among those of their own rank.