Augustine of Hippo

"He has founded it above the seas." He has most firmly established it above all the waves of this world, that they should be subdued by it, and should not hurt it. "And has prepared it above the rivers" [Psalm 24:2]. The rivers flow into the sea, and men of lust lapse into the world: these also the Church, which, when worldly lusts have been conquered by the grace of God, has been prepared by love for the reception of immortality, subdues.