At one time, people used their Bibles to document births, deaths and special occasions. I don’t think that was wrong, either.
In my family Cathoic bible it has 3 generation of birth dates and wedding
I understand that and I am not bashing Tebow, but autographing a Bible like it is a football or a book you wrote just seems a bit off to me. Not the end of the world, and it does not diminish my high opinion of Tebow. It is just something I don’t think should be encouraged.