 All-powerful beings, good or evil, are called Devas and Asuras in the oldest layer of Vedic texts.A much-studied hymn of the Rigveda states "Devav asura" (Asuras who have become Devas), and contrasts it with "Asura adevah" (Asuras who are not Devas).They are born from the same father, Prajapati, the primordial progenitor; his sons are envisioned as the Asuras and Devas.