BG 4.24

For those who are completely absorbed in God-consciousness, the oblation is Brahman, the ladle with which it is offered is Brahman, the act of offering is Brahman, and the sacrificial fire is also Brahman. Such persons, who view everything as God, easily attain Him.

BG 4.25

Some yogis worship the celestial gods with material offerings unto them. Others worship perfectly who offer the self as sacrifice in the fire of the Supreme Truth.

BG 15.12

Know that I am like the brilliance of the sun that illuminates the entire solar system. The radiance of the moon and the brightness of the fire also come from Me.