The interpretation timeline
Psalm 56:10 Douay-Rheims

I will give praise to thee, O Lord, among the people: I will sing a psalm to thee among the nations.

A.D. 430 – 1849 3 witnesses

Patristic

before A.D. 750
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“Therefore there has risen psaltery and harp in the dawn, and he confesses to the Lord; and says what? "I will confess to You among the peoples, O Lord, and will play to You among the nations: for magnified even unto the Heavens has been Your mercy, and even unto the clouds Your truth." Heavens above clouds, and clouds below heavens: and nevertheless to this nearest heaven belong clouds. But sometimes clouds rest upon the mountains, even so far in the nearest air are they rolled. But a Heaven above there is, the habitations of Angels, Thrones, Dominions, Principalities, Powers. This therefore may perchance seem to be what should have been said: "Unto the Heavens Your truth, and even unto the clouds Your mercy." For in Heaven Angels praise God, seeing the very form of truth, without any darkness of vision, without any admixture of unreality: they see, love, praise, are not wearied. There is truth: but here in our own misery surely there is mercy. For to a miserable one must be rendered mercy. For there is no need of mercy above, where is no miserable one. I have said this because that it seems as though it might have been more fittingly said, "Magnified even unto the Heavens has been Your truth, and even unto the clouds Your mercy." For "clouds" we understand to be preachers of truth, men bearing that flesh in a manner dark, whence God both gleams in miracles, and thunders in precepts.. ..Glory to our Lord, and to the Mercy of the Same, and to the Truth of the Same, because neither has He forsaken by mercy to make us blessed through His Grace, nor defrauded us of truth: because first Truth veiled in flesh came to us and healed through His flesh the interior eye of our heart, in order that hereafter face to face we may be able to see It.”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“For thy mercy is great unto the heavens,.... Which denotes the exceeding greatness and largeness of it; as it is in the heart of God, who is plenteous in mercy; as it is expressed in the covenant of grace, where are stores of it; as it is shown forth in the choice of persons to eternal life; in the mission of Christ into this world to die for them; in the regeneration of them, the pardon of their sins, and eternal life: and this mercy is not only extended to persons in the several parts of the earth, but is as high as the heaven above it, Psa 103:11; and thy truth unto the clouds; the faithfulness of God in performing his purposes and his promises; or the Gospel, and the doctrines of it, which contain the deep things of God; unless Christ himself should be meant, who is the truth which sprung out of the earth, Psa 85:11; is now ascended unto heaven, and is higher than the heavens; and whose exaltation and glory may be designed in Psa 57:11.”
Source
1849
A.D.
1774–1849
“Nations. The psalms are now recited, (Worthington) in every language, and the wonders wrought by Christ are proclaimed. (Calmet)”
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.