The interpretation timeline
Psalm 100:5 Douay-Rheims

The man that in private detracted his neighbour, him did I persecute. With him that had a proud eye, and an unsatiable heart, I would not eat.

A.D. 373 – 1849 6 witnesses 7 excerpts

Patristic

before A.D. 750
373
A.D.
c. A.D. 296–373
“And Jezebel was able to injure the most religious Naboth by her false accusations; but then it was the wicked and apostate Ahab who listened to her. But the most holy David, whose example you ought to follow, as all pray that you may, does not favor such people but was apt to turn away from them and avoid them, as raging dogs. He says, "Whoever secretly slanders his neighbor, him will I destroy." For he kept the commandment that says, "You shall not receive a false report." And false are the reports of these people in your sight. You, like Solomon, have required of the Lord (and you ought to believe yourself to have obtained your desire), that it would seem good to him to remove far from you vain and lying words.”
Source
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“I beseech you, let us avoid altogether passing sentence on our neighbor. You see, even though you have no share in judicial authority and yet you still pass judgment in your mind, you have rendered yourself guilty of sin for accepting no proof and acting in many cases only on suspicion and mere slander. This, in fact, was the reason blessed David also cried out in the words, "The one who slanders his neighbor in secret I drove out." Do you see the extraordinary degree of virtue? Not only did he not entertain what was said but he also gave short shrift to the person bent on slandering his brother. So if we, too, want to reduce our own faults, we should be on our guard about this most of all, not to condemn our brothers or to encourage those anxious to slander them, but rather to rebuff them as the inspired author recommended and utterly repel them. In fact, I am inclined to think this is what the inspired author Moses also was indicating in his words, "Do not accept an idle report."”
Source
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“"Whoso privily slandered his neighbour, him I persecuted" [Psalm 101:5]. Behold the righteous persecutor, not of the man, but of the sin. "With the proud eye, and the insatiable heart, I did not feed." What means, "I did not feed with"? I did not eat in common with such. Attend, beloved; since you are about to hear something wonderful. If he did not feed with this man, he did not eat with him; for to feed is to eat; how is it then that we find our Lord Himself eating with the proud? It was not only with those publicans and sinners, for they were humble: for they acknowledged their weakness, and asked for the physician. We find that He ate with the proud Pharisees themselves. A certain proud man had invited Him: it was the same who was displeased because a sinning woman, one of ill repute in the city, approached the feet of our Lord....That Pharisee was proud: the Lord ate with him; what is it therefore that he says? "With such an one I did not eat." How does He enjoin unto us what He has not done Himself? He exhorts us to imitate Himself: we see that He ate with the proud; how does He forbid us to eat with the proud? We indeed, brethren, for the sake of reproof, abstain from communion with our brethren, and do not eat with them, that they may be reformed? We rather eat with strangers, with Pagans, than with those who hold with us, if we have seen that they live wickedly, that they may be ashamed, and amend; as the Apostle says, "And if any man obey not our word by this Epistle, note that man, and have no company with him, that he may be ashamed. Yet count him not as an enemy, but admonish him as a brother." [2 Thessalonians 3:14] For the sake of healing others we usually do this; but nevertheless we often eat with many strangers and ungodly men.”
Source
“If it were always praiseworthy to suffer persecution, it would have been enough for the Lord to say, "Blessed are they that suffer persecution," without adding "for justice sake." Similarly, if it were always blameworthy to persecute, it would not be written in the sacred Books: "The one that in private speaks ill of his neighbor, him did I persecute." Sometimes, then, the one who suffers persecution is unjust, and the one who persecutes is just. It is clear that the bad have always persecuted the good and the good have persecuted the bad; the former to do harm unjustly, the latter to bring about amendment by punishment; the one without limits, the other within bounds; those as slaves of passion, these out of love. The one who kills does not mind how he butchers his victim, but the one who cures watches carefully how he cuts; he has health as his aim, the other destruction. Impious people killed the prophets; the prophets also killed impious people. The Jews scourged Christ, and Christ scourged the Jews. The apostles were delivered up by people to the civil rulers, and the apostles delivered up people to the power of Satan. In all these cases, what else is to be noted except to ask which of them served the cause of truth, which that of sin; which one wished to injure, which one wished to convert?”
Source

Scholastic

c. 1100 – 1500
1105
A.D.
Rashi Jewish
1040–1105
“I cannot tolerate him that he should be my friend, lest I learn from his deeds.”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“Whoso privily slandereth his neighbour, him will I cut off,.... That raises and spreads a false report of him; that insinuates evil things of him; that brings false charges and accusations against him, in a private manner, when he has no opportunity to defend himself: such an one David threatens to cut off from his presence, as Kimchi interprets it; from all communion and conversation with him; and yet he listened to the slanders of Ziba against Mephibosheth: but Christ, who knows the hearts and the secret actions of men, will reject and cut off all persons of such a character: the Targum is, "he that speaketh with a triple tongue against his neighbour, him will I destroy, and he shall be smitten with the leprosy:'' a slandering tongue is called a triple tongue with the Jews (m), because, as they say, it kills three persons; him that carries the slander, him that receives it, and him of whom it is related; see the Apocrypha: "Whoso hearkeneth unto it shall never find rest, and never dwell quietly.'' (Sirach 28:16) him that hath an high look and a proud heart will not I suffer; or, "I cannot" (n); that is, cannot bear him in my presence and company; cannot look upon him with any pleasure and delight: the Septuagint, Vulgate Latin, and the Oriental versions, render it, "with him I will not eat": have no familiarity or acquaintance with him; see Co1 5:11, such who looked above others, and with contempt upon them, whose hearts were large, as the word (o) signifies, were ambitious and insatiable, and never had enough of riches and honour; such were very contrary to David's character, and could never be agreeable to him, Psa 121:1, as the proud and haughty Pharisees were not to Christ, Luk 18:9, and the man of sin that exalts himself above all that is called God, that little horn, whose look is more stout than his fellows, Th2 2:4. (m) T. Bab. Erahin, fol. 15. 2. Vide Targum Jon. in Deut. 27. 4. (n) "non potero", Pagninus, Montanus, Gejerus; "ferre", Musculus, Junius & Tremellius, Piscator, Cocceius, Michaelis. (o) "vastum corde", Montanus; "latum corde", Vatablus, Cocceius, Gejerus, Michaelis.”
Source
1849
A.D.
1774–1849
“Persecute. Or abhor (Worthington) with a perfect hatred. We must shew our displeasure if we hear detraction, (Haydock) that we may not partake in the crime. (St. Jerome) — The court is most likely to be infected with this vice, as people are continually endeavouring to supplant their rivals. (Calmet) — Secret thoughts of resentment must be stifled in their birth. (Eusebius) — Heart. Hebrew, “wide heart,” which is sometimes taken in a good sense, 3 Kings iv. 29. But here it denotes the ambitious and misers, Proverbs xxviii. 25. (Calmet)”
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.