The interpretation timeline
Psalm 72:1 Douay-Rheims

A psalm for Asaph. How good is God to Israel, to them that are of a right heart!

A.D. 430 – 1875 8 witnesses

Patristic

before A.D. 750
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“"How good is the God of Israel!" But to whom? "To men right in heart" (ver. 1). To men perverse what? Perverse He seemeth. So also in another Psalm He saith: "With a holy man holy Thou shalt be, and with the innocent man innocent Thou shalt be, and with the perverse man perverse Thou shalt be." What is, perverse Thou shalt be with the perverse man? Perverse the perverse man shall think Thee. Not that by any means God is made perverse. Far be it: what He is, He is. But in like manner as the sun appeareth mild to one having clear, sound, healthy, strong eyes, but against weak eyes doth dart hard spears, so to say; the former looking at it it doth invigorate, the latter it doth torture, though not being itself changed, but the man being changed: so when thou shalt have begun to be perverse, and to thee God shall seem to be perverse, thou art changed, not He. That therefore to thee will be punishment which to good men is joy. He calling to mind this thing, saith, "How good is the God of Israel to men right in heart!"”
Source
523
A.D.
c. A.D. 450–523
“David sheweth in a psalm that the grace of God aboundeth specially with the pure in heart, saying, "God is good to Israel, even to the pure in heart;" now he uniteth purity of heart with the sight of God, for the name Israel is interpreted "He hath seen God". And whosoever is simple and pure in heart is able to see God.”
Source

Scholastic

c. 1100 – 1500
1105
A.D.
Rashi Jewish
1040–1105
“A song of Asaph. Truly God is good to Israel, etc. Since the topic of this psalm deals with the troubles that befall Israel, he commences it in this manner. And this is the meaning: Although I cry out and am dismayed at Israel’s troubles, I knew that the Holy One, blessed be He, is good to them, and that He brings evil upon them for their own good, in order to give them merit in the life of the world to come.”
Source
1235
A.D.
Radak Jewish
c. 1160–1235
“Psalm. This psalm is spoken about the perplexity of the children of the world regarding the peace of the wicked and the suffering of the righteous in this world. This poet Asaf speaks about his own tongue or the tongue of every fool: He says, "Surely God is good to Israel." Even though they are in exile, God is good to them and will continue to preserve their good deeds. It is also good for those with a sincere heart among the other nations, even though they experience evil in this world, they will have goodness in the world to come. And the meaning of "surely" is that I truly know what will happen, for He will still bestow goodness upon them.”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“Truly God is good to Israel,.... To Israel, literally understood; in choosing them to be his people above all people on earth; in bringing them into a good land; in favouring them with many external privileges, civil and religious; in giving them his word, statutes, and ordinances, as he did not to other nations: or, spiritually understood, the Israel whom God has chosen, redeemed, and called by his special grace; verily of a truth, God is good to these; there is abundant proof and evidence of it; See Gill on Psa 34:8, or "only" God is good to such; though he is good to all in a providential way, yet only to his chosen and redeemed ones in a way of special favour; the goodness others share is but a shadow of goodness, in comparison of what they do and shall partake of; they are blessed with blessings indeed, and are only blessed; so this particle is rendered in Psa 62:2, or "but", or "notwithstanding" (b), God is good, &c. that is, though he suffers the wicked to prosper, and his own people much afflicted, yet he is good to them; he supports them under their afflictions, and makes all to work for their good; gives them grace here, and glory hereafter; even to such as are of a clean heart; this character excludes the carnal Israelites, who were pure in their own eyes, but not cleansed from their filthiness, and describes the true Israel of God, and explains who are meant by them, such as are pure in heart, inwardly Jews, Israelites indeed, in whom there is no guile; this is not natural to men, their hearts are by nature unclean, nor is it in their power to make them clean: this is God's work, he only can create a clean heart, and renew a right spirit; which is done by the sanctifying influences of his grace, and by the sprinkling of the blood of Jesus, and thus purifying their heart's by faith; yet so as not to be free from all impurity of spirit, but as to have a conscience purged from the guilt of sin, and to have the heart sincere and upright towards God. (a) Sept. "Asaph ipsi", Pagninus, Montanus; "Asapho", Gejerus; so Ainsworth. (b) "attamen", Tigurine version, Piscator, Gussetius, Michaelis.”
Source
1849
A.D.
1774–1849
“Asaph. See Psalm xlix. We shall not undertake to decide whether he composed or only sung this psalm; (Berthier) or whether he lived under David or Josaphat, or rather during the captivity. Those who attribute all the psalms to David, get rid of many such inquires: but they are involved in other difficulties, (Calmet) which are not insurmountable. (Haydock) — How. Hebrew, “Surely,” as if an answer was given to what had long troubled the author. (Berthier) — God is more excellent and beneficent (Haydock) than any tongue can express. (Worthington)”
Source
1863
A.D.
1796–1863
“P. " Truly God is good to Israel, to even such as are of a clean heart." The psalmist begins, «» is- suing from a deep meditation, in which the prosperity of the wicked had suggested a doubt of the divine goodness. " Aitamen bonus est." St. Jerome.”
1875
A.D.
Keil & Delitzsch Lutheran
1861–1875
אך, belonging to the favourite words of the faith that bids defiance to assault, signifies originally "thus = not otherwise," and therefore combines an affirmative and restrictive, or, according to circumstances, even an adversative signification (vid., on Psa 39:6). It may therefore be rendered: yea good, assuredly good, or: only good, nothing but good; both renderings are an assertion of a sure, infallible relation of things. God appears to be angry with the godly, but in reality He is kindly disposed towards them, though He send affliction after affliction upon them (Lam 3:25). The words ישראל אלהים are not to be taken together, after Gal 6:16 (τὸν Ἰσραήλ τοῦ Θεοῦ); not, "only good is it with the Israel of Elohim," but "only good to Israel is Elohim," is the right apprehension of the truth or reality that is opposed to what seems to be the case. The Israel which in every relationship has a good and loving God is limited in Psa 73:1 to the pure in heart (Psa 24:4; Mat 5:8). Israel in truth are not all those who are descended from Jacob, but those who have put away all impurity of disposition and all uncleanness of sin out of their heart, i.e., out of their innermost life, and by a constant striving after sanctification (Psa 73:13) maintain themselves in such purity. In relation to this, which is the real church of God, God is pure love, nothing but love. This it is that has been confirmed to the poet as he passed through the conflict of temptation, but it was through conflict, for he almost fell by reason of the semblance of the opposite. The Chethξb נטוּי רגלי (cf. Num 24:4) or נטוּי (cf. Sa2 15:32) is erroneous. The narration of that which is past cannot begin with a participial clause like this, and כּמעט, in such a sense (non multum abfuit quin, like כּאין, nihil abfuit quin), always has the perfect after it, e.g., Psa 94:17; Psa 119:87. It is therefore to be read נטיוּ (according to the fuller form for נטוּ, which is used not merely with great distinctives, as in Psa 36:8; Psa 122:6; Num 24:6, but also with conjunctives out of pause, e.g., Psa 57:2, cf. Psa 36:9, Deu 32:37; Job 12:6): my feet had almost inclined towards, had almost slipped backwards and towards the side. On the other hand the Chethb שׁפּכה is unassailable; the feminine singular is frequently found as predicate both of a plural subject that has preceded (Psa 18:35, cf. Deu 21:7; Job 16:16) and also more especially of one that is placed after it, e.g., Psa 37:31; Job 14:19. The footsteps are said to be poured out when one "flies out or slips" and falls to the ground.”
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.