Aja - the unborn
In the Bagavad Gita, Chapter 10, Text 3
The "Purport" or elaboration on the text reads
"Here the Lord (Krishna) is described by the word aja, meaning “unborn,” but He is distinct from the living entities who are described in the Second Chapter as aja. The Lord is different from the living entities who are taking birth and dying due to material attachment. The conditioned souls are changing their bodies, but His body is not changeable."
http://www.bhagavad-gita.us/bhagavad-gita-10-1.htm
The "Purport" or elaboration on the text reads
"Here the Lord (Krishna) is described by the word aja, meaning “unborn,” but He is distinct from the living entities who are described in the Second Chapter as aja. The Lord is different from the living entities who are taking birth and dying due to material attachment. The conditioned souls are changing their bodies, but His body is not changeable."
http://www.bhagavad-gita.us/bhagavad-gita-10-1.htm