'Decay' in the Bible

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

For You will not abandon my soul to Sheol;Nor will You allow Your Holy One to undergo decay.

That he should live on eternally,That he should not undergo decay.

I heard and my inward parts trembled,At the sound my lips quivered.Decay enters my bones,And in my place I tremble.Because I must wait quietly for the day of distress,For the people to arise who will invade us.