He does require Faith. Because something doesn't make sense to us doesn't necessarily mean it isn't true.
Or, as you say, what does makes sense to us isn't necessarily true.
We do not decide Truth. Jesus was the Way, the Truth, and the Life that brings us to the Father (God/The Holy Trinity).
Trinity is not an original Christian concept. It does not appear in any Christian writing till about 270 a.d.
There are definitely things in the Bible that are not true. Or, I should say, not LITERALLY true.