To be brutally honest, I think looking at the Bible as an inspired 'Holy Book from God' is a mistake.
There are some good bits and bad bits. A lot seem more like metaphors than true stories.
Anyway, or anyways, with an 's' on the end for my American cousins......
If one must take this stuff seriously, how about Luke 10:7....although you could argue it's about hospitality more than door knocking.....but hey, why not interpret it how you want...every other bugger does
Luke 10:7
New International Version
7 Stay there, eating and drinking whatever they give you, for the worker deserves his wages. Do not move around from house to house.