21 Prepare a place to slaughter his children for the sins of their ancestors; they are not to rise to inherit the land and cover the earth with their cities.

Read Isaiah 14:21 Using Other Translations

Prepare slaughter for his children for the iniquity of their fathers; that they do not rise, nor possess the land, nor fill the face of the world with cities.
Prepare slaughter for his sons because of the guilt of their fathers, lest they rise and possess the earth, and fill the face of the world with cities."
Kill this man’s children! Let them die because of their father’s sins! They must not rise and conquer the earth, filling the world with their cities.”