With all the Emergent church leaders like Brian McClaren who are declaring that Everything Must Change I believe it's quite clear from this verse that as Christians we are commanded not to meddle with them that not only are given to change but who openly proclaim that a change is needed within Christendom, and you may ask why? Well just read the next Proverb.
Proverbs 24:22 "For their calamity shall rise suddenly; and who knoweth the ruin of them both?"
Clearly the Emergent Church Movement has risen suddenly and who will know the ruin of them that follow this change? The famous Baptist Preacher John Gill commented on these verses in his Exposition of the whole Bible he said concerning verse 21 quote:
"Or who are given to change in religious things; make innovations in doctrine and practice, always love to hear or say some new thing; turn with every wind, and shift as that does; are tossed about with every wind of doctrine, fickle and inconstant, carried about like meteors in the air, with "divers and strange doctrines"; such as disagree with the perfections of God, the doctrines of Christ and his apostles, the Scriptures of truth, the analogy of faith, anti form of sound words; and so the word here used signifies "divers", and is so rendered Es 3:8; and may design such who hold doctrines and give into practices divers and different from the faith once delivered to the saints, and from the institutions and appointments of Christ; innovations in doctrine and worship ought not to be admitted of; and such who are for introducing them should not be meddled or mixed with; they should not be countenanced and encouraged; they should not be attended upon or given heed unto; have no fellowship, and join not in communion with them." —John Gill (1697 – 1771)I would like to leave you with a quote from D. A. Carson that I think speaks volumes of truth on this subject of change within Christendom.
"Always be suspicious of church's that proudly flaunt how different they are from what has gone before." —D. A. Carson