Then I said, I will not make mention of him (God), nor speak any more in his name. But his word was in mine heart as a burning fire shut up in my bones, and I was weary with forbearing, and I could not stay. Jeremiah 20:9

And they said one to another, Did not our heart burn within us, while he (Jesus) talked with us by the way, and while he opened to us the scriptures? Luke 24:32

Is not my word like as a fire? saith the LORD; and like a hammer that breaketh the rock in pieces? Jeremiah 23:29

…let the word of Christ dwell (take up its life) in you richly…