Then I said, ‘I will not make mention of Him, Nor speak anymore His name.’
But His word was in my heart like a burning fire shut up in my bones; I was weary of holding it back and could not.
Jer 20:9 NKJV
And the Angel of the Lord appeared to him in a flame of fire from the midst of a bush. So he looked, and behold, the bush was burning with fire, but the bush was not consumed.
Ex 3:2 NKJV
I indeed baptize you with water unto repentance, but He who is coming after me is mightier than I, whose sandals I am not worthy to carry. He will baptize you with the Holy Spirit and fire.
Matt 3:11 NKJV