smiddy - I remember the 'house to house' bit in Acts 20:20 now. It is one the JWs believe is a command. It doesn't look like a command to me. It seems to be a bit of a one off in terms of 'methods' before Paul was bunged under house arrest.
They never mention Luke 10:7 though.
Vandy would probably have a better handle on it than me, I've given up studying after the trauma with the Corporation(tm) destroyed my trust.