Gregory the Dialogist

There shall neither be seed of him, nor offspring in his people, nor any remnant in his parts. For it is written, that the Lord Jesus shall consume him, with the Spirit of His mouth, and shall destroy him with the brightness of His coming. And so, then, whereas his wickedness is ended together with the settled constitution of the world, there shall be 'no offspring of him left in his people,' in that both he himself and his people along with him are equally forced to punishment; and all the wicked, who by his evil advising were born …

Morals on the Book of Job, Book XIV ↗

Thomas Aquinas

But since parents also live in their children he rejects this saying, "His seed will not exist," because his sons will be dead, "nor offspring in his people," since neither grandsons nor great-grandsons will remain, nor even his relatives, and so he then says, "nor any remain in his territory," neither those related by blood nor members of his household by whom his memory may be kept.

Commentary on Job ↗