Worshipping in truth is the opposite of worship based on an inadequate view of God. Worship must have heart and worship must have head. Worship must engage your emotions and worship must engage your thought. Truth without emotion produces dead orthodoxy and a church full of unspiritual fighters. Emotion without truth produces empty frenzy and cultivates flaky people who reject the discipline of rigorous thought.
True worship comes from people who are deeply emotional and who love deep and sound doctrine.
But something is missing from that analogy, namely, fire. The fuel of truth in the furnace of your spirit does not automatically produce the heat of worship. There has to be fire , which I think is the Holy Spirit. I've taken him to mean that worship must come from your spirit within instead of being merely formal and external. In other words, until the Holy Spirit touches our spirit with the flame of life our spirit is so dead it does not even qualify as spirit.