נָהָ֗ר פְּלָגָ֗יו יְשַׂמְּח֥וּ עִיר־אֱלֹהִ֑ים קְ֝דֹ֗שׁ מִשְׁכְּנֵ֥י עֶלְיֽוֹן׃
There is a river, the streams whereof make glad the city of God, The holiest dwelling-place of the Most High.
Read kabbalistic (mystical) interpretation of Psalms 46:5: and classical mystical sources.