I disagree
I wouldn't say they are 'extreme'.

They simply follow by example - Jesus went door to door to talk about the kingdom to those who would listen.

'extreme' are the people who go about screaming at others that they are going to hell. (Which is aptly hypocritical as the bible plainly doesn't mention hell).
(FunOnABun Smears lard on you!, Fri 20 Feb 2009, 19:02, 2 replies)

Erm...
I can't remember the bit in the Bible where Jesus goes door to door.

I remember him lunching, supper-ing, etc. in lots of people's houses and doing lots of healing, but the bit where the disciples and him split up and head off round a town to do some door-knocking and preach to random people?Don't remember that. Maybe I'm being ignorant?
(SnowyTheWereRabbit the Leporid from Hell, Fri 20 Feb 2009, 23:58, closed)

I haven't read enough of the Bible to really be qualified to comment,
but I abjectly refuse to believe that it doesn't mention Hell anywhere in it.
(idle insomniac enjoys listening to Sigur Rós at stupid hours, Sat 21 Feb 2009, 2:31, closed)

"they will be cast into the outer darkness"
Mark 2:15 translated from Hebrew, Greek and Aramaic as "the unseen state" meaning after death of the body.

Look in any concordex at the back of a Bible under "Future home of the wicked" and there's a bunch.
(TDub Nunc id vides, nunc ne vides on, Sun 22 Feb 2009, 0:56, closed)