Alternate links: YouTube, Google Video, Brightcove. See related sermon here.

"I appeal to you, brothers, to watch out for those who cause
divisions and create obstacles contrary to the doctrine that you have
been taught; avoid them. For such persons do not serve our Lord Christ,
but their own appetites, and by smooth talk and flattery they deceive
the hearts of the naive." – Romans 16:17-18

"[P]eople who depart from true doctrine do not appear to us as monsters,
mean and brash and pushy. Rather, the words Paul used in his
description indicates false teachers win followers by appearing to
bring a blessing. Their speech is pleasant, plausible and kind —
totally winsome. They are nice, gentlemanly, fair-minded and humble." See Sharon’s related blog post here.