He shall neither have son nor nephew among his people; rather, nor grandson; i.e. "his posterity shall be clean put out" (Psalms 109:14). Nor any remaining in his dwellings; rather, in the places where he sojourned (compare the Revised Version, which gives "in his sojournings").
It is implied that the wicked man shall be a vagabond, without a home, sojourning now here, now there, for a short time. Neither among his own people, nor in these places of his temporary abode, shall he leave any descendant.
Bildad probably intends to glance at the destruction of Job's children (Job 1:19).