Ahhh... so you mean that the biblical morality of Deuteronomy (killing family members who decide to develop another faith for example) was only ok in those specific circumstances that you mention. Gotcha. Thanks for clarifying that. Rationality indeed!!
And why do you insist on portraying Christians today who follow the gospel as tribal Jews living in Moses's time?
We don't kill people for switching faiths. In fact the christian church never has in all it's days.
If it wasn't for the Christian Church, western society would never have climbed out of the dark ages. It was the "glue" that held Europe together long enough so it could develop to the society it is today. (although it's now in decline since the beginning of the 20th century, following the decline of faith)