Stay in that house, eating and drinking whatever they give you, for the worker deserves his wages. Do not move around from house to house. Luke 10:7
What do you make out of these two verses that seem to confilict?
I think the line is ok to depend entierly on your religous work for your support (as some of the apostles did), but not ok to become a religous huckser (like some well know tv-preachers who are more about merchandising.)
Where does Hal Lindsey fall? I don't know. Just because most of your work involves writing books (and telling people about them) doesn't mean you're a huckster. Writing still is the main way to get infomation across to people.
A huckster lies and deceives. Unfortunately, most seem to have fallen for the lie that the Scriptures would be incomprehensible, were it not for the 'interpretations' of certain scholars. It's akin to the leaven (doctrine) of the Pharisees, who were covetous. I suspect that the searching for and removing any trace of chametz, in preparation for Passover, is much more than a cleaning ritual.