True worship must involve our whole being. Mind, heart and will must harmonize to magnify His name. We must praise Him with understanding, so we shall not encourage mindless ditties. Exhortations to “try to lift the roof off this time” have more to do with FA Cup finals than worship, and to be told to “sing it as though you really mean it” is sacrilege. What is the difference between that and an outright invitation to be hypocrites? If any worship leader feels he has to make such a request, then everyone has already missed the point of worshipping in truth. A careless mental attitude prevents true worship.

(Virgo, Terry; Warnock, Adrian (2011-08-16). The Spirit-Filled Church (p. 65). Kregel Publications. Kindle Edition.)