Job 27:15 (ESV)

15 Those who survive him the pestilence buries, and his widows do not weep.

Job is still describing the fate of a wicked man’s children. Those children who do survive the sword (Job 27:14) will be killed by the pestilence. The victim of pestilence does not even receive a decent burial, since everything is done to get rid of the body and the disease it carries.