And take not the word of truth utterly out of my mouth; for I have hoped in your judgments.
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Augustine of Hippo
44. "O take not the word of Thy truth away out of my mouth even exceedingly" (ver. 43). He saith, out of my mouth, because the unity of the body is speaking, among whose members those also are counted who failed at the hour by denying, but by penitence afterwards came again to life, or even, by renewing their confession, received the palm of martyrdom, which they had lost. The word of truth, therefore, was not "even exceedingly," or, as some copies have it, even every way, that is not altogether taken from the mouth of Peter, in whom was the type of the Church; because although he denied for the hour, being disturbed with fear, yet by weeping he was restored, and by confessing was afterwards crowned. The whole body of Christ therefore speaketh. ...Next followeth, "for I have hoped in Thy judgments." Or, as some have more strictly rendered it from the Greek, "I have hoped more;" a word which, although compounded in a somewhat unusual way, yet answers the necessary purpose of conveying t...
Mouth. Let those who preach the truth, live up to it. (St. Hilary and St. Ambrose)
Though the psalmist may be under some fear, he prays that he may not omit to make open profession of his faith. (Worthington)
God never hinders his servants from doing this, though he sometimes suffers them to fall. But the Church will never cease to proclaim the truth. She will not give up one article of faith, though all heretics would thus embrace every other part of her doctrine. She will never open her bosom to those who would alter one point, nor say that such can enter heaven. (Berthier)