The interpretation timeline
Psalm 131:16 Douay-Rheims

I will clothe her priests with salvation: and her saints shall rejoice with exceeding great joy.

A.D. 430 – 1849 3 witnesses

Patristic

before A.D. 750
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“"I will clothe her priests with salvation, and her saints shall rejoice and sing" [Psalm 132:16]. We are now at the end of the Psalm; attend for a short space, Beloved. "I will clothe her priests with salvation, and her saints shall rejoice and sing." Who is our salvation, save our Christ? What means, therefore, "I will clothe her priests with salvation"? "As many of you as have been baptized into Christ, have put on Christ." [Galatians 3:27] "And her saints shall rejoice and sing." Whence shall they rejoice and sing? Because they have been clothed with salvation: not in themselves. For they have become light, but in the Lord; for they were darkness before. [Ephesians 5:8] Therefore he has added, "There will I raise up the horn of David" [Psalm 132:17]: this will be David's height, that trust be put in Christ. For horn signifies height: and what sort of height? Not carnal. Therefore, while all the bones are wrapped up in flesh, the horn goes beyond the flesh. Spiritual altitude is a horn. But what is spiritual loftiness, save to trust in Christ? Not to say, It is my work, I baptize; but, "He it is who baptizes." [John 1:33] There is the horn of David: and that you may know that there is the horn of David, heed what follows: "I have ordained a lantern for mine Anointed." What is a lantern? You already know the Lord's words concerning John: "He was a burning and a shining light." [John 5:35] And what says John? "He it is who baptizes." Herein therefore shall the saints rejoice, herein the priests shall rejoice: because all that is good in themselves, is not of themselves, but of Him who has the power of baptizing. Fearlessly therefore does every one who has received baptism come unto His temple; because it is not man's, but His who made the horn of David to flourish.”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“His enemies will I clothe with shame, With the garments of shame, as the Targum; very different from the clothing of Zion's priests; all that are incensed against Christ as a King and Saviour shall sooner or later be ashamed; either here, when brought to a sense of their evil, to repentance for it, and faith in him; or hereafter, at the resurrection, when they will rise to shame and everlasting contempt, and when they shall see him come in the clouds of heaven, in power and great glory, to judge the world in righteousness, Isa 45:24; but upon himself shall his crown flourish; being crowned with glory and honour, as he now is at the right hand of God, he reigns, and will reign, till all his enemies become his footstool; his throne is for ever and ever, and his kingdom an everlasting one; and will be very flourishing in the latter day, when his subjects shall be many, and when there shall be an abundance of peace and prosperity, and of that no end; the crown of the Messiah shall flourish on him as a king, shine out and be very conspicuous, as Aben Ezra and Jarchi interpret the word used; and so his crown as a priest; the same word is used of the holy crown of the priests put upon the mitre, on which Holiness to the Lord was inscribed; and the Septuagint, Vulgate Latin, Syriac, Arabic, and Ethiopic versions, render it, "my holiness"; and, as his own crown is a never-fading one, such an one he will give to his ministers, and all that love him appearing, Pe1 5:4. Next: Psalms Chapter 133”
Source
1849
A.D.
1774–1849
“Salvation. To instruct others. (Berthier) — The Church hath always had some virtuous priests and laics. (Worthington)”
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.