Two of the best definitions of worship we have encountered, from William Temple (by way of Scotty Smith) and Louie Giglio:
Worship is the submission of all our nature to God. It is the quickening of conscience by his holiness; the nourishment of mind with his truth; the purifying of imagination by his beauty; the opening of the heart to his love; the surrender of will to his purpose–and all this gathered up in adoration, the most selfless emotion of which our nature is capable and therefoe the chief remedy for that self-centeredness which is our original sin and the source of all acutal sin.
–William Temple, Readings in St. John’s Gospel, as quoted by Scotty Smith in The Reign of Grace
Worship is our response, both personal and corporate, to God, for who He is and what He has done, expressed in and by the things we say and the way we live.
–Louie Giglio, The Air I Breathe