The fuel of worship is a true vision of the greatness of God;
the fire that makes the fuel burn white hot is the quickening of the Holy Spirit;
the furnace made alive and warm by the flame of truth is our renewed spirit;
and the resulting heat of our affections is powerful worship, pushing its way out in confessions, longings, acclamations, tears, songs, shouts, bowed heads, lifted hands, and obedient lives.
The Fuel, Fire, Furnace, and Heat of Worship
What is required for genuine worship in spirit and in truth? What does it look like? Here is John Piper's answer from Desiring God, p. 82: