Rebuke the company of spearmen, the multitude of the bulls, with the calves of the people, till every one submits himself with pieces of silver: scatter you the people that delight in war.
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Augustine of Hippo
35. "From Thy Temple in Jerusalem, to Thee kings shall offer presents" (ver. 29). Jerusalem, which is our free mother, because the same also is Thy holy Temple: from that Temple then, "to Thee kings shall offer presents." Whatever kings be understood, whether kings of the earth, or whether those whom "He that is above the heavens distinguisheth over the dove silvered;" "to Thee kings shall offer presents." And what presents are so acceptable as the sacrifices of praise? But there is a noise against this praise, from men bearing the name of Christian, and having diverse opinions. Be there done that which followeth, "Rebuke Thou the beasts of the cane" (ver. 30). For both beasts they are, since by not understanding they do hurt: and beasts of the cane they are, since the sense of the Scriptures they wrest according to their own misapprehension. For in the cane the Scriptures are as reasonably perceived, as language in tongue, according to the mode of expression whereby the Hebrew or the Greek or the Latin tongue is spoken of, or the like; that is to say, bythe efficient cause the thing which is being effected is implied. Now it is usual in the Latin language for writing to be called style, because with the stilus it is done: so then cane also, because with a cane it is done. The Apostle Peter saith, that "men unlearned and unstable do wrest the Scriptures to their own proper destruction:" these are the beasts of the cane, whereof here is said, "Rebuke Thou the beasts of the cane."
36. Concerning these also is that which followeth, "The congregation of bulls amid the cows of the peoples, in order that there may be excluded they that have been tried with silver." Calling them bulls because of the pride of a stiff and untamed neck: for he is referring to heretics. But by "the cows of the peoples," I think souls easily led astray must be understood, because easily they follow these bulls. For they lead not astray entire peoples, among whom are men grave and stable; whence hath been written, "In a people grave I will praise Thee:" but only the cows which they may have found among those peoples. "For of these are they that steal into houses, and lead captive silly women laden with sins, who are led with divers lusts, alway learning, and at the knowledge of the truth never arriving." ...For, "may be excluded," hath been said, meaning, may appear, may stand forth: as he saith, "may be made manifest." Whence also, in the art of the silversmith, they are called exclusores, who out of the shapelessness of the lump are skilled to mould the form of a vessel. For many meanings of the holy Scriptures are concealed, and are known only to a few of singular intelligence, and are never vindicated so suitably and acceptably as when our diligence to make answer to heretics constraineth us. For then even they that neglect the pursuits of learning, shaking off their slumber, are stirred up to a diligent hearing, in order that their opponents may be refuted. In a word, how many senses of holy Scriptures concerning Christ as God have been vindicated against Photinus, how many concerning Christ as man against Manichaeus, how many concerning the Trinity against Sabellius, how many concerning the Unity of the Trinity against Arians, Eunomians, Macedonians? How many concerning the Catholic Church in the whole world spread abroad, against Donatists, and Luciferians, and others, whoever they be, that with like error dissent from the truth: how many against the rest of heretics, whom to enumerate or mention were too long a task, and for the present work unnecessary? ...Of whom, as it were bulls, that is, not subject to the peaceful and gentle yoke of discipline, the Apostle maketh mention, in the place where he hath said that such an one must be chosen for the Episcopate as is "able to exhort in sound doctrine and to convince the gainsayers. For there are many unruly;" these are bulls with uplifted neck, impatient of plough and yoke: vain-talkers and leaders astray of minds; which minds this Psalm hath intimated under the name of cows. ...