You have seen it: for you behold mischief and spite, to repay it with your hand: the poor commits himself unto you; you are the helper of the fatherless.
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Augustine of Hippo
10. Accordingly understanding now the manifest judgment, and in exultation at it, they say, "Wherefore hath the ungodly angered God?" (ver. 13); that is, what hath it profiled him to do so great evil? "For he said in his heart, He will not require it." Then follows, "For Thou seest toil and considerest anger, to deliver them into Thine hands" (ver. 14). This sentence looks for distinct explanation, wherein if there shall be error it becomes obscure. For thus has the ungodly said in his heart, God will not require it, as though God regarded toil and anger, to deliver them into His hands; that is, as though He feared toil and anger, and for this reason would spare them, lest their punishment be too burdensome to Him, or lest He should be disturbed by the storm of anger: as men generally act, excusing themselves of vengeance, to avoid toil or anger.
11. "The poor hath been left unto Thee." For therefore is he poor, that is, hath despised all the temporal goods of this world, that Thou only mayest be his hope. "Thou wilt be a helper to the orphan," that is, to him to whom his father this world, by whom he was born after the flesh, dies, and who can already say, "The world hath been crucified unto me, and I unto the world." For of such orphans God becomes the Father. The Lord teaches us in truth that His disciplesdo become orphans, to whom He saith, "Call no man father on earth." Of which He first Himself gave an example in saying, "Who is my mother, and who my brethren?" Whence some most mischievous heretics would assert that He had no mother; and they do not see that it follows from this, if they pay attention to these words, that neither had His disciples fathers. For as He said, "Who is my mother?" so He taught them, when He said, "Call no man your father on earth."