As the son of waters, Agni loves wood but retreats to water, and he is so identified with Indra that he 'thunders' and 'gives rain' (as lightning; ii.6.

5; iii.9.

2).
The deeper significance of Agni-worship is found not alone in the fact that he is the god in whom are the other gods, nor in that he is the sun alone, but that "I am Agni, immortality is in my mouth; threefold my light, eternal fire, my name the oblation (fire)," iii.26.7.

He is felt as a mysterious trinity.

As a sun he lights earth; and gives life, sustenance, children, and wealth (iii.3.