He sent from above, he took me, he drew me out of many waters.
Read Chapter 18
Augustine of Hippo
AD 430
17. "He hath sent down from on high, and hath fetched Me (ver. 16): by calling out of the Gentiles for an inheritance "a glorious Church, not having spot, or wrinkle." "He hath taken Me out of the multitude of waters." He hath taken Me out of the multitude of peoples.
Sent his angel
Waters, which often represent multitudes, (Apocalypse xvii. 15.; Calmet) and afflictions. (Worthington)
David seemed in danger of perishing. (Calmet)