I trust that the Church respects my decision on where I want my money to go. But, I would imagine that if there was some kind of devestating disaster in the world and our humaritarian funds couldn't keep up, then they may use money from the Book of Mormon fund or some other fund to help.
I say that we need to teach our people to find their answers in the scriptures...But the unfortunate thing is that so many of us are not reading the scriptures. We do not know what is in them, and therefore we speculate about things that we ought to have found in the scriptures themselves. I think that therein is one of our biggest dangers of today."
--President Harold B. Lee, December, 1972