Which of the following is the hardest doctrine for new believers or less committed Christians to accept?

I believe a lot of things I would rather not believe. There are things about God I do not particularly like, but I realize the problem is mine. The God of the Bible and the teachings of the Word can be offensive or painful to embrace. Which is the hardest? Yours might not be on the list, so please choose from the list but then feel free to comment.

The question relates not to the world at large, but young, new, or less mature believers. This is obviously based upon your experiences and observations, and is about the situaiton in the now, not the past.

Discussion