You sit and speak against your brother; you slander your own mother's son.
All Commentaries on Psalms 50:20 Go To Psalms 50
Augustine of Hippo
AD 430
27. "Sitting against thy brother thou didst detract" (ver. 20). And this "sitting" doth belong to that whereof he hath spoken above in, "hath embraced." For he that doeth anything while standing or passing along, doth it not with pleasure: but if he for this purpose sitteth, how much leisure cloth he seek out to do it! That very evil detraction thou wast making with diligence, thou wast making sitting; thou wouldest thereon be wholly engaged; thou wast embracing thy evil, thou wast kissing thy craftiness. "And against thy mother's son thou didst lay a stumbling-block." Who is "mother's son"? Is it not brother? He would repeat then the same that he had said above, "thy brother." Hath he intimated that any distinction must be perceived by us? Evidently, brethren, I think a distinction must be made. Brother against brother doth detract, for example's sake, as though for instance one strong, and now a doctor and scholar of some weight, doth detract from his brother, one perchance that is teaching well and walking well: but another isweak, against him he layeth a stumbling-block by detracting from the former. For when the good are detracted from by those that seem to be of some weight and to be learned, the weak fall upon the stumbling-block, who as yet know not how to judge. Therefore this weak one iscalled "mother's son," not yet father's, still needing milk, and hanging on the breast. He is borne as yet in the bosom of his mother the Church, he isnot strong enough to draw near to the solid food of his Fathers table, but from the mother's breast he draweth sustenance, unskilled in judging, inasmuch as yet he isanimal and carnal. "For the spiritual man judgeth all things," but "the animal man perceiveth not those things which are of the Spirit of God; for they are foolishness to him." To such men saith the Apostle, "I could not speak unto you as unto spiritual, but as unto carnal, as to babes in Christ I gave you milk to drink, not meat; for ye were not able, but not even now are ye able." A mother I have been to you: as issaid in another place, "I became a babe among you, even as a nurse cherishing her own children." Not a nurse nursing children of others, but a nurse cherishing her own children. For there are mothers who when they have borne give to nurses: they that have borne cherish not their children, because they have given them to be nursed; but those that cherish, cherish not their own, but those of others: but he himself had borne, he was himself cherishing, to no nurse did commit what he had borne; for he had said, "Of whom I travel again until Christ be formed in you." He did cherish them, and gave milk. But there were some as it were learned and spiritual men who detracted from Paul. "His letters indeed, say they, are weighty and powerful; but the presence of his body weak, and speech contemptible:" he saith himself in his Epistle, that certain his detractors had said these words. They were sitting, and were detracting against their brother, and against that their mother's son, to be fed with milk, they were laying a stumbling-block. "And against thy mothers son thou didst lay a stumbling-block."
