en_tn/job/15/27.md

This is true

"This" refers to the wicked man who "runs at God with a stiff neck" in the previous verse.

he has covered his face with his fat and gathered fat upon his loins

This wicked man is described as fat and weak, while believing himself to be strong enough to defeat God. (See: rc://en/ta/man/translate/figs-irony)

he has covered his face with his fat

AT: "his face looks fat and chubby"

gathered fat upon his loins

"loins" are often considered the location of physical strength and generative power. To cover them with fat would be to destroy his power and ability to fight.

heaps

AT: "disorganized piles"