Ezekiel 26:17
17
And they shall take up a lamentation for thee, and say to thee, How art thou destroyed, that wast inhabited by sea-faring men, the renowned city, which wast strong in the sea, she and her inhabitants, who cause their terror to be on all that haunt it!
Fifteen
Fifteen, as in Genesis 7:20, signifies to be very few so as to be almost nothing.
(références: Arcana Coelestia 792)