'Decay' in the Bible

“But his body [lamenting its decay] grieves in pain over it,And his soul mourns over [the loss of] himself.”

If I call out to the pit (grave), ‘You are my father’;And to the worm [that feeds on decay], ‘You are my mother and my sister [because I will soon be closest to you],’

“Let his own eyes see his decay,And let him drink of the wrath of the Almighty.