The Brahmanas and the sages call him the most ancient of beings. He is the first-born of all the gods and fire came out from his mouth.
ज्येष्ठं भूतं वदन्त्येनं ब्राह्मणा मुनयस्तथा। प्रथमो ह्येष देवानां मुखादस्यानलोऽभवत्॥