Isaiah 13:18
“Their bows also shall dash the young men to pieces; and they shall have no pity on the fruit of the womb; their eye shall not spare children.”
Their children also shall be dashed to pieces before their eyes; their houses shall be spoiled, and their wives ravished.
Behold, I will stir up the Medes against them, which shall not regard silver; and as for gold, they shall not delight in it.
Their bows also shall dash the young men to pieces; and they shall have no pity on the fruit of the womb; their eye shall not spare children.
And Babylon, the glory of kingdoms, the beauty of the Chaldees’ excellency, shall be as when God overthrew Sodom and Gomorrah.
It shall never be inhabited, neither shall it be dwelt in from generation to generation: neither shall the Arabian pitch tent there; neither shall the shepherds make their fold there.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“They shall lay hold on bow and spear; they are cruel, and have no mercy; their voice roareth like the sea; and they ride upon horses, set in array as men for war against thee, O daughter of Zion.”
“And Hazael said, Why weepeth my lord? And he answered, Because I know the evil that thou wilt do unto the children of Israel: their strong holds wilt thou set on fire, and their young men wilt thou slay with the sword, and wilt dash their children, and rip up their women with child.”
“Let there be none to extend mercy unto him: neither let there be any to favour his fatherless children.”
“Therefore the Lord shall have no joy in their young men, neither shall have mercy on their fatherless and widows: for every one is an hypocrite and an evildoer, and every mouth speaketh folly. For all this his anger is not turned away, but his hand is stretched out still.”
“Through the wrath of the Lord of hosts is the land darkened, and the people shall be as the fuel of the fire: no man shall spare his brother.”