In my most recent reading, I have learned something new about this word. The ability to believe is something that is implanted in the hearts of all individuals. And it is planted there by divine decree. To believe in something is more than just thinking it in your mind. To truly believe involves possessing the belief in your mind, your heart, and in your actions. Essentially, "beliefs are born of thoughts; they are then expressed in words; and, finally, they are manifest before mankind in works".
What a refreshing new insight on this word that is so commonly used. It doesn't matter if someone says they believe in something - what matters is the reality. If one truly believes, then such beliefs will be manifest in their actions.
There are so many things to believe in... what do you believe in?