My two favorites are Mt.23:15 and Mt.23:23.The latter one is already covered here so I'll expand on mt.23:15.
Ever notice how far they'll travel,how long they'll study with one person,how out of their way they'll go for someone who is just studying,practically holding you by the hand till the day you get baptized?Then when they can't use you to pad their service report,you're not as important as you were made to feel.Basically,you're on your own now,go get your own calls,rv's,studies,hours,placements....and if you don't meet our righteous standards,we'll condemn you till you quit!
Sound familiar?