Sons of the stranger
'Sons of the stranger' signify counterfeit truths, or falsities. 'Our sons' signify the doctrines of truth, and 'our daughters,' the doctrines of good, as in Psalm 144:11-12.
(References: Arcana Coelestia 489; Psalms 144:11)
Isaiah 14:29-30
29
Don't rejoice, O Philistia, all of you, because the rod that struck you is broken; for out of the serpent's root an adder will emerge, and his fruit will be a fiery flying serpent.
30
The firstborn of the poor will eat, and the needy will lie down in safety; and I will kill your root with famine, and your remnant will be killed.