The interpretation timeline
Psalm 70:13 Douay-Rheims

Let them be confounded and come to nothing that detract my soul; let them be covered with confusion and shame that seek my hurt.

A.D. 430 – 1875 4 witnesses

Patristic

before A.D. 750
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“"O Lord, my God, be not far from me." So it is, and the Lord is not far off at all. For, "The Lord is nigh unto them that have bruised the heart." "My God, unto my help look Thou." "Be they confounded and fail that engage my soul." What hath he desired? "Be they confounded and fail." Why hath he desired it? "That engage my soul"? What is, "That engage my soul"? Engaging as it were unto some quarrel. For they are said to be engaged that are challenged to quarrel. If then so it is, let us beware of men that engage our soul. What is, "That engage our soul"? First provoking us to withstand God, in order that in our evil things God may displease us. For when art thou right, so that to thee the God of Israel may be good, good to men right in heart? When art thou right? Wilt thou hear? When in that good which thou doest, God is pleasing to thee; but in that evil which thou sufferest, God is not displeasing to thee. See ye what I have said, brethren, and be ye on your guard against men that engage your souls. For all men that deal with you in order to make you be wearied in sorrows and tribulations, have this aim, namely, that God may be displeasing to you in that which ye suffer, and there may go forth from your mouth, "What is this? For what have I done?" Now then hast thou done nothing of evil, and art thou just, He unjust? A sinner I am, thou sayest, I confess, just I call not myself. But what, sinner, hast thou by any means done so much evil as he with whom it is well? As much as Gaiuseius? I know the evil doings of him, I know the iniquities of him, from which I, though a sinner, am very far; and yet I see him abounding in all good things, and I am suffering so great evil things. I do not then say, O God, "what have I done" to Thee, because I have done nothing at all of evil; but because I have not done so much as to deserve to suffer these things. Again, art thou just, He unjust? Wake up, wretched man, thy soul hath been engaged! I have not, he saith, called myself just. What then sayest thou? A sinner I am, but I did not commit so great sins, as to deserve to suffer these things. Thou sayest not then to God, just I am, and Thou art unjust: but thou sayest, unjust I am, but Thou art more unjust. Behold thy soul hath been engaged, behold now thy soul wageth war. What? Against whom? Thy soul, against God; that which hath been made against Him by whom it was made. Even because thou art in being to cry out against Him, thou art ungrateful. Return, then, to the confession of thy sickness, and beg the healing hand of the Physician. Think thou not they are happy who flourish for a time. Thou art being chastised, they are being spared: perchance for thee chastised and amended an inheritance is being kept in reserve. ...Lastly, see what followeth, "Let them put on confusion and shame, that think evil things to me." "Confusion and shame," confusion because of a bad conscience, shame because of modesty. Let this befall them, and they will be good. ...”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“Let them be confounded,.... See Psa 70:2; and consumed; like smoke; see Psa 37:20; as antichrist will be with the breath of Christ's mouth, and the brightness of his coming, Th2 2:8; that are adversaries to my soul; that hated him with a diabolical hatred, as the devil hates the souls of men, and who has his name "Satan" from the word here used; all wicked men are Satans, full of enmity against God, and all good men; and such were David's enemies, spiteful and malicious, and nothing would satisfy them but his life; let them be covered with reproach and dishonour; as with a garment: that seek my hurt; see Psa 35:26; as Absalom and his company; so Arama.”
Source
1849
A.D.
1774–1849
“Detract. Hebrew, “are satans,” or “adversaries,” during my trial. The Fathers say these are predictions, Psalm xxxiv. 4. (Calmet) — David certainly wished to spare the chief of the rebels, and he most probably speaks of his spiritual enemies. (Berthier)”
1875
A.D.
Keil & Delitzsch Lutheran
1861–1875
“In view of Psa 40:15 (Psa 70:3), Psa 35:4, Psa 35:26; Psa 109:29, and other passages, the reading of יכּלמוּ, with the Syriac, instead of יכלוּ in Psa 71:13 commends itself; but there are also other instances in this Psalm of a modification of the original passages, and the course of the thoughts is now climactic: confusion, ruin (cf. Ps 6:11), and in fact ruin accompanied by reproach and shame. This is the fate that the poet desires for his deadly foes. In prospect of this he patiently composes himself, Psa 71:14 (cf. 31:25); and when righteous retribution appears, he will find new matter and ground and motive for the praise of God in addition to all such occasion as he has hitherto had. The late origin of the Psalm betrays itself again here; for instead of the praet. Hiph. הוסיף (which is found only in the Books of Kings and in Ecclesiastes), the older language made use of the praet. Ka. Without ceasing shall his mouth tell (ספּר, as in Jer 51:10) of God's righteousness, of God's salvation for he knows not numbers, i.e., the counting over or through of them (Psa 139:17.); (Note: The lxx renders οὐκ ἔγνων πραγματείας; the Psalterium Romanum, non cognovi negotiationes; Psalt. Gallicum (Vulgate), non cognovi literaturam (instead of which the Psalt. Hebr., literaturas). According to Bttcher, the poet really means that he did not understand the art of writing.) the divine proofs of righteousness or salvation עצמוּ מסּפּר (Psa 40:6), they are in themselves endless, and therefore the matter also which they furnish for praise is inexhaustible. He will tell those things which cannot be so reckoned up; he will come with the mighty deeds of the Lord Jahve, and with praise acknowledge His righteousness, Him alone. Since גּברות, like the New Testament δυνάμεις, usually signifies the proofs of the divine גּבוּרה (e.g., Psa 20:7), the Beth is the Beth of accompaniment, as e.g., in Psa 40:8; Psa 66:13. בּוא בּ, vernire cum, is like Arab. j'â' b (atâ), equivalent to afferre, he will bring the proofs of the divine power, this rich material, with him. It is evident from Psa 71:18. that בגברות does not refer to the poet (in the fulness of divine strength), but, together with צדקתך, forms a pair of words that have reference to God. לבדּך, according to the sense, joins closely upon the suffix of צדקתך (cf. Ps 83:19): Thy righteousness (which has been in mercy turned towards me), Thine alone (te solum = tui solius). From youth up God has instructed him, viz., in His ways (Psa 25:4), which are worthy of all praise, and hitherto (עד־הנּה, found only in this passage in the Psalter, and elsewhere almost entirely confined to prose) has he, "the taught of Jahve" (למּוּד ה), had to praise the wonders of His rule and of His leadings. May God, then, not forsake him even further on עד־זקנה ושׂיבה. The poet is already old (זקן), and is drawing ever nearer to שׂיבה, silvery, hoary old age (cf. Sa1 12:2). May God, then, in this stage of life also to which he has attained, preserve him in life and in His favour, until (עד = עד־אשׁר, as in Psa 132:5; Gen 38:11, and frequently) he shall have declared His arm, i.e., His mighty interposition in human history, to posterity (דּור), and to all who shall come (supply אשׁר), i.e., the whole of the future generation, His strength, i.e., the impossibility of thwarting His purposes. The primary passage for this is Psa 22:31.”
Source
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.