The Lord GOD hath sworn by himself, saith the LORD the God of hosts, I abhor the excellency of Jacob, and hate his palaces: therefore will I deliver up the city with all that is therein. The Lord God hath sworn by himself - בנפשו benaphsho, by his soul, his being, existence.
Related Commentaries of Amos 6:8
Amos 6:8
8 The Lord GOD hath sworn by himself, saith the LORD the God of hosts, I abhor the excellency of Jacob, and hate his palaces: therefore will I deliver up the city with all that is therein.