I will set his hand also in the sea, and his right hand in the rivers.
Read Chapter 89
Augustine of Hippo
25. "I will set His hand also in the sea" (ver. 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.
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)