God's Bible tells us who we are, what we are made of, why we are here. He tells us how old the world is and the processes that brought it to be as we know it today. These statements can be studied, tested and confirmed, "for all who look". God also states a fact about comets that scientists don't know and that we can observe. This "truth for trust" is to prove to us that the words in this bible are his. - - It could also be used as a sign, for people who need that.