Fixed it.
It's not center to CHRISTIAN belief, it's center to CATHOLIC belief and one does not mean the other. The two should not be conflated as they are not the same thing.
Catholicism does not own the word *Christian*.
Interesting that on this issue you differ from Martin Luther.
Maybe it needs reminding what Martin Luther, the Protestant Reformer, said about the Bible? In his “Commentary On St. John,” he stated the following:
“We are compelled to concede to the Catholic Church that they have the Word of God, that we have received It from them, and that without them we should have no knowledge of It at all.”
End of all discussion.