This is an allusion to an Old Testament passage:
When Balaam saw that it pleased the LORD to bless Israel, he did not go as at other times to seek omens but he set his face toward the wilderness. And Balaam lifted up his eyes and saw Israel camping tribe by tribe; and the Spirit of God came upon him. Numbers 24:1-2
How fair are your tents, O Jacob, Your dwellings, O Israel! "Like valleys that stretch out, Like gardens beside the river, Like aloes planted by the LORD, Like cedars beside the waters. "Water will flow from his buckets, And his seed will be by many waters, And his king shall be higher than Agag, And his kingdom shall be exalted. Numbers 24:5-7
Jacob's seed did, indeed, sit by many waters as a result of at least three diasporas: Babylon (Nebuchadnezzar), Greece (Antiochus IV Epiphanes), and Rome (Pompey). Peter even addresses his first epistle to those of these diasporas:
Peter, an apostle of Jesus Christ, To those who reside as aliens, scattered throughout Pontus, Galatia, Cappadocia, Asia, and Bithynia, who are chosen 1 Peter 1:1
In the Book of Acts, men of Israel are said to have come from all over the known world to hear Peter's first sermon:
Now there were Jews living in Jerusalem, devout men from every nation under heaven. Acts 2:5
The facts are set against you.
All good verses; but the FACT remains that Jerusalem; itself; is NOT beside many waters.