The interpretation timeline
Psalm 88:26 Douay-Rheims

And I will set his hand in the sea; and his right hand in the rivers.

A.D. 430 – 1849 3 witnesses 4 excerpts

Patristic

before A.D. 750
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“"I will set His hand also in the sea" [Psalm 89:25]: that is, He shall rule over the Gentiles; "and His right hand in the floods." Rivers run into the sea: avaricious men roll onwards into the bitterness of this world: yet all these kinds of men will be subject to Christ.”
“"He shall call me, You are My Father, and the lifter up of My salvation" [Psalm 89:26].”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“Also I will make him my firstborn,.... Or, "make him the firstborn"; make him great, as Jarchi interprets it; give him the blessing, the double portion of inheritance: so Christ is made most blessed for ever, and has all spiritual blessings in his hands; and is heir of all things, and his people joint-heirs with him. Christ is God's "firstborn", or "first begotten", Heb 1:6, being begotten by him, and of him; and his firstbegotten, though none begotten after him; as the first that opened the womb, under the law, was called the firstborn, though none were ever born after; and in such sense his first begotten, as that he is his only begotten: and he is the firstborn, with respect to creatures; "he is the firstborn of every creature"; Col 1:15, being begotten and brought forth before any creature was in being, Pro 8:22, and, with respect to the saints, "he is the firstborn among many brethren", Rom 8:29, they are of the same nature, and in the same family, and in which Christ is a son, and the firstborn; and in all things he has the preeminence; and he is also "the firstborn from the dead", or "the first begotten of the dead", Col 1:18 being raised first from thence by his own power, and to an immortal life; and is the first fruits of them that sleep, and the efficient and meritorious cause of the resurrection of life, and the pattern and exemplar of it: even him the Father promises to make "higher than the kings of the earth"; having a kingdom of a superior nature to theirs, and a more extensive and durable one; and even they themselves shall be subject to him; hence he is called "King of kings", Rev 19:16. This will be when their kingdoms become his; when they shall fall down before him, and worship him, and bring their riches and glory into his kingdom, or the New Jerusalem church state, Psa 72:10. This passage is interpreted of the Messiah by the Jews (f). (f) In Shemot Rabba, s. 19. fol. 104. 4.”
Source
1849
A.D.
1774–1849
“Rivers. Of his kingdom there shall be no end, Luke i. 33., and Zacharias ix. 10. (Haydock) — Every nation shall adore him. David extended his conquests over all Arabia, and from the Pelusium to the Euphrates. (Calmet) — In this sense, the text may be applied to him, though it belongs more to Christ. (Menochius)”
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.