"There is no God like thee which ... shewest mercy unto thy servants, that walk before thee with all their hearts" (2 Chronicles 6:14)
The theory [of impromptu service planning] is that if the meeting is unplanned the Holy Spirit will work freely, and that would be true if all the worshipers were reverent and Spirit-filled. But mostly there is neither order nor Spirit, just a routine prayer that is, except for minor variations, the same week after week, and a few songs that were never much to start with and have long ago lost all significance by meaningless repetition.
In the majority of our meetings there is scarcely a trace of reverent thought, no recognition of the unity of the body, little sense of the divine presence, no moment of stillness, no solemnity, no wonder, no holy fear...
The whole Christian family stands desperately in need of a restoration of penitence, humility and tears. May God send them soon.
We would do well to follow our old-fashioned forbears who knew what it was to kneel in breathless, wondering adoration in the presence of God.
~A. W. Tozer~