Fire has a lot of importance in Vedic religion. Fire had great importance in the Rigvedic era. In Rigveda there are about 200 mantras for worship of fire. Fire has been given a special importance in the Yajnas, so it was called priest, Hota, and Yagyaik. Fire has been considered to destory the demons from the entire world. It has also been called the mouth of Gods (dieties) because through this all sacrifices (Aahuti) reached to the dieties.
All these things reflect the importance of fire in Vedic religion.