Thomas Aquinas

Above, the Psalmist treated of the malice and deceit of his adversaries; here he treats of his own justice. And first he shows what kind of justice God accepts. Second, as if giving thanks, he shows what his own justice is, at the place, "preserve me." The title, "A Psalm of David." In this Psalm he does two things: for, existing as a priest before God, he consults God. First a question is posed. Second, the response, at the place, "he who walks without blemish." He therefore sets forth a twofold question: because there is a twofold state of the Church, present and future. The first is of those who are warring: Apocalypse 14: "Henceforth now the Spirit says that they may rest." And these two states were signified in the Old Testament. For first they had the tabernacle, Exodus 26, as long as they had wars and labors. 2 Kings 7: "It came to pass, when the Lord had given rest to David from all his enemies, that he said to Nathan: You see that I dwell in a house of cedar, and the ark of God is set in the midst of skins?" Afterward he made the temple, when he had peace. By the tabernacle is designated the Church militant, by the temple made on the mountain, the state of the future life; and therefore he says, "Who shall dwell in your tabernacle?" That is, in the present Church; as if he were to say: who is worthy to dwell? For sinners dwell there in number, not in merit. Jerome has, "Who shall sojourn?" Psalm 67: "He makes those of one mind to dwell in a house." The second question, "who shall rest on your holy mountain?" And it is called a holy mountain, because nothing there is defiled: Jeremiah 31: "May the Lord bless you, O beauty of justice, holy mountain"; Isaiah 35: "It shall be called the holy way"; Exodus 15: "You shall bring them in and plant them in the mountain of your inheritance, in your most firm habitation, which you have made, O Lord."

"Who..." Here the response is set forth; and concerning this he does two things. First he commemorates the merits of those dwelling in the aforesaid places, namely in the tabernacle and on the holy mountain of God. Second, the reward, at the place, "he who does these things shall not be moved forever." Now he sets forth ten effects of the virtues. But the action of the virtuous man is considered in two ways. First by comparison to himself. Second by comparison to others. First he sets forth those things by which a man acts well in himself. Second, those by which he conducts himself well toward his neighbor, at the place, "nor has he done to his neighbor," etc. In himself, as to external things, in deed, and in speech. In deed, as to two things. First, that he flee evil; and therefore he says: "who walks without blemish." This life is a kind of road toward eternal life; and therefore he says, "walks," that is, journeys along the way: Psalm 41: "I shall go into the place of the tabernacle." Likewise Psalm 118: "Blessed are the undefiled in the way." "Without blemish," namely mortal, because venial sin does not, properly speaking, have blemish: Ecclesiasticus 31: "Blessed is the rich man that is found without blemish." But in Christ and in the Virgin Mary there was no blemish whatsoever, and to these is appropriated temperance, because it is against temperance that one is defiled. Second, that he do good; and therefore it follows, "and works justice," that is, those things to which justice inclines; and they are reduced to it insofar as it is a special virtue. In speech, first, that he do good; "who speaks the truth," that is, that he do good in his speech: Isaiah 33: "Who among you shall be able to dwell with the everlasting burnings? He who walks in justices, and speaks truth." And he says, "in his heart," against those who speak truth by chance, not from purpose: Proverbs 12: "The lip of truth shall be firm"; 1 Peter 2: "laying aside all guile and all deceit, as newborn infants." Second, that he avoid evil, namely deceitfulness: Jeremiah 9: "their tongue is a wounding arrow, it has spoken deceit." "Who has not done deceit in his tongue." Another reading has, "who is not glib in his tongue": Proverbs 25: "a city that lies open and without the compass of walls, is a man who cannot restrain his own spirit in speaking." Another reading, "and there is no accusation in his tongue"; because, namely, he is not a detractor and a reporter of tales; or because his words are not open to accusation: Ephesians 4: "let no evil speech proceed out of your mouth."

"Nor has he done..." Above the Psalmist treated of the virtuous operation which God accepts, enumerating those things by which a man acts well in himself; but here he enumerates those things by which he conducts himself well toward his neighbor. And here, as regards his neighbor, he asks three things. First, that he not harm him. Second, that he not consent to one harming him: Romans 1: "they who do such things shall not obtain the kingdom of God; but they are worthy of death, not only they who do them, but they also who consent to them that do them." Third, that he not deceive him. He says, therefore, as to the first, "nor has he done evil to his neighbor," neither bodily nor spiritually: Romans 12: "rendering to no man evil for evil"; Galatians 6: "while we have time, let us work good." As to the second he says, "and has not taken up a reproach against his neighbors." Someone says something against another, but it is not to be tolerated; and therefore he says, "he has not taken up a reproach," namely then, when he who hears detracting words against someone, and from these detests the one of whom they are spoken, or even himself says them to others: Ecclesiasticus 19: "have you heard a word against your neighbor? let it die within you," etc. Ecclesiasticus 28: "hedge in your ears with thorns, and do not listen to a wicked tongue." Jerome: "if there is no listener, there is no detractor." Bernard: "which of these is more damnable, to detract or to listen to one detracting, I would not easily say": Proverbs 25: "the north wind scatters rain, and a sad face, a detracting tongue"; because, literally, the detractor stops when the hearer is saddened.

"As nothing..." Here he shows that he does not despise. In man there are two things: namely vice and virtue. Vice is to be despised; and therefore he says, "the malignant one," insofar as he is such, "is brought to nothing," that is, is reckoned as nothing; and this is good: first, to remove envy: for sometimes some evil man is exalted: Jeremiah 12: "the way of the wicked prospers," etc. But because of this he ought in no way to reckon him great, but ought to despise him: 1 Maccabees 2: "the glory of a sinful man is dung and worms: today he is lifted up, and tomorrow he is not found, because he is turned back into his own earth, and his thought has perished." Or someone great intends to harm; but since he is malignant, despise him: because the disparagement of such men is the approval of our life: Psalm 26: "though hosts should stand together against me, my heart shall not fear," namely of sinners. But repute the virtuous man great; therefore he says, "but he glorifies them that fear the Lord": Ecclesiasticus 25: "how great is he that finds wisdom and knowledge, but there is none above him that fears the Lord." The Gloss expounds otherwise, "in his sight the malignant one is brought to nothing," that is, the Devil is bound by him: John 2: "you have overcome the wicked one," etc. The Lord glorifies them that fear the Lord, namely himself. But the first exposition is the more literal.

Here he forbids that he deceive his neighbor. Now a neighbor is deceived in three ways. Namely in promises, and this through an oath; and therefore he says, "who swears," etc., that is, confirms in order to deceive, because he does not keep it: Zechariah 8: "love not a false oath"; Leviticus 14: "you shall not swear falsely by the name of your God, and you shall not pollute it." To swear does not pertain to virtue, but to keep the oath does. Likewise in contracts. Whence: "who has not put out his money to usury": Luke 6: "lend, hoping for nothing thereby: and has not taken bribes against the innocent": Proverbs 17: "the wicked man takes gifts out of the bosom," that is, of the Church, "to pervert the paths of judgment"; Deuteronomy 23 it is forbidden that it be given to a brother upon usury, because he sells what is not his, since he does not have the usufruct. Likewise in judgments, when he gives sentence against the innocent; and therefore he says, "and gifts": Isaiah 5: "woe to you that justify the wicked for gifts"; Job 19: "fire shall devour the tabernacles of them that love to take gifts." Consequently the reward is set forth. "He who does," that is, keeps, "these things," all the aforesaid: James 1: "be doers of the word"; Romans 2: "not the hearers of the law are just before God, but the doers": "shall not be moved forever," that is, he shall dwell here on my holy mountain: below, Psalm 124: "they that trust in the Lord shall be as mount Zion," etc. Psalm 54: "you shall never suffer the just to waver."

Above, Psalm 15.