Ependuomai means to put on clothing over what one already wears — to be additionally clothed upon, not stripped and re-dressed. It appears only twice in the NT, both in 2 Corinthians 5 in Paul's profound reflection on embodiment, resurrection, and the believer's longing for the heavenly body.
Paul's use of ependuomai is theologically precise. He does not long to be stripped of his body (Greek body-hating dualism) but to be "further clothed" — to have the resurrection body put on over the mortal one. "For we who are in this tent groan, longing to put on [ependusasthai] our heavenly dwelling." This is the biblical vision of resurrection: not escape from matter but its transformation and glorification. The mortal is "swallowed up by life" — consumed from without by resurrection power, not destroyed from within.