My mouth shall shew forth thy justice; thy salvation all the day long. Because I have not known learning,

“"My mouth shall tell out Your righteousness" [Psalm 71:15]: not mine. From thence I will add to all Your praise: because even that I am righteous, if righteous I am, is Your righteousness in me, not my own: for You justify the ungodly. [Romans 4:5] "All the day long Your salvation." What is, "Your salvation"? Let no one assume to himself, that he saves himself, "Of the Lord is Salvation." Not any one by himself saves himself, "Vain is man's salvation." "All the day long Your Salvation:" at all times. Something of adversity comes, preach the Salvation of the Lord: something of prosperity comes, preach the Salvation of the Lord. Do not preach in prosperity, and hold your peace in adversity: otherwise there will not be that which has been said, "all the day long." For all the day long is day together with its own night. Do we when we say, for example, thirty days have gone by, mention the nights also; do we not under the very term days include the nights also? In Genesis what was said? "The evening was made, and the morning was made, one day." [Genesis 1:5] Therefore a whole day is the day together with its own night: for the night does serve the day, not the day the night. Whatever you do in mortal flesh, ought to serve righteousness: whatever you do by the commandment of God, be it not done for the sake of the advantage of the flesh, lest day serve night. Therefore all the day long speak of the praise of God, to wit, in prosperity and in adversity; in prosperity, as though in the day time; in adversity, as though in the night time: all the day long nevertheless speak of the praise of God, so that you may not have sung to no purpose, "I will bless God at every time, always the praise of Him is in my mouth.". ..”

“David the prophet sheweth that the mind which is remote from the cunning of human teachings is particularly able to comprehend the righteousness of God, and to possess courage of spirit and the confidence which will contend with all things, saying, "Because I know not the art of writing, I will go in in the strength of the Lord, and I will remember Thy righteousness only."”

“My mouth shall show forth thy righteousness,.... Both his punitive justice in taking vengeance on his enemies, agreeably to the above imprecations; and his faithfulness in the performance of promises of good things unto him; as also his essential righteousness displayed and glorified in the redemption that is by Christ; and particularly the righteousness of Christ, accepted of God, and imputed by him; which the psalmist with his mouth declared his faith in, expressed his joy at, and set forth in a strong manner the glory and excellency of it, and determined to make mention of it, and of that only, as in Psa 71:16; and thy salvation all the day; both temporal and eternal; the glory of both, and praise for the same; for I know not the numbers thereof; of that righteousness and salvation, the numerous blessings which are contained in them; see Psa 40:5; or "though I know not the numbers of them" (c); though he could not fully declare the glories and excellencies of the righteousness and salvation of God, and the numerous mercies and rich grace included in them; yet he would attempt to set them forth in the best way he could, though in a feeble and imperfect manner. (c) "quamvis", Junius & Tremellius, Piscator, Gejerus; So Ainsworth.”

“Learning. As much as to say, I build not upon human learning, but only upon the power and justice of God. (Challoner) (Worthington) — I have not leisure to write a canticle at present, as the word known intimates, Psalm xiii. 3., and lxxiii. 9. But I will do it hereafter, and record the praises which I now proclaim. Some would translate, “I know not the number” of thy mercies. (Berthier) — This sense is adopted by the Chaldean, Theod., &c. See Psalm xxxix. 6. Yet it seems more probable, that David acknowledges his inability to speak of God as he deserves, though he promises to do his best to shew the utmost respect. So Solomon confessed his ignorance, (Proverbs xxx. 2.) and Socrates asserted, that all his knowledge consisted in the conviction of his complete ignorance. If this be true with respect to human science, how much more so is it, when we speak of God, (Haydock) and attempt to dive into the holy Scriptures? (Genebrard) — David meditated on the law continually, Psalm i. 2. (Calmet) — Yet he admits, that he stands in need of a guide (Haydock) and must enter into the sanctuary, to penetrate such high mysteries, Psalm lxxii. 17. St. Augustine and Eusebius understand, that the letter of the Mosaic law is incapable of insuring salvation. (Calmet) — This text has been abused, to encourage ignorance, as Amama (p. 502.) complains with respect to the Protestant pulpits and colleges abroad. Knox gives a dreadful picture, of their universities in England. (Haydock) — “With the unlearned Anabaptists and fanatics, such may perhaps conclude, that they will thus more easily approach to God,” (Tarnov.) and “may boast, that they have been instructed in the school of the holy Spirit,” theodikatoi , “when they boldly ascend the pulpit, and adduce texts from Scripture, it matters not whether right or wrong.” (Amama) — Is not this generally the case among those who broach new religions? (Haydock) — Vatican Septuagint reads, pragmateias , “mercantile affairs.” But the Vulgate follows the edition of Aldus, &c., grammateias . (Berthier) — A similar variation occurs, 1 Esdras viii. The former reading is adduced by the Fathers, and by Gelasius, (dist. 88.) who hence condemns clergymen engaging in merchandise, (Amama) as it was contrary to their calling: and formerly at least, very dangerous for any honest man. (Haydock) — David had not received a polite education, and he disapproved of Achitophel’s worldly prudence. (Menochius)”