Is there any evidence that this guy belonged to a church? Ever even entered a church in his adulthood? Had an established faith outside of church? Pretty hard to make the case that he was a Christian if not.
Islamic terrorists are much easier; islam sanctions the killing of non-muslims, and most of the known terrorist went to a mosque, and professed a faith in traditional islam.
From what I can tell “registration” with a religious affiliation (or atheism) happens at birth in Norway.
My main concern is that Norway offers a perfect example of what liberals would love to do here. The state funded and state controlled church of Norway is full of political appointees which can seriously damage a church over time.
Imagine Van Jones being appointed to be a Bishop.