It doesn't take guts at all. Contradictions, like flaws, are made because some Christians don't understand the faith, and some are guilty of false teachings, either intentionally or unintentionally.
Christians aren't perfect by any means, just like all people.
Catholic Christianity:
Calling a Priest Father: Only call God Father
The Bible is Free from error and God inspired : the gospels contradict themselves . they cant agree on the same thing.