Devahavya is a sage (rishi) who is a member of Indra‘s assembly. He is a very great and intelligent sage. He has many magical and supernatural powers. Devahavya studied all 4 Vedas, the Upanishads, Puranas, Upa-Puranas, Brahmanas, Shastras, and many other advanced texts. He is very knowledgable and helps Indra make decisions.
The sages of Hinduism had immense power acquired through great endeavors of spirituality. Through severe penance, they acquired the supreme truth and wrote knowledge-filled scriptures.