 In the layers of Vedic texts, Surya is one of the several trinities along with Agni and either Vayu or Indra, which are presented as an equivalent icon and aspect of the Hindu metaphysical concept called the Brahman.In the Brahmanas layer of Vedic literature, Surya appears with Agni (fire god) in the same hymns.Surya is revered for the day, while Agni for its role during the night.