To believe in
|To believe that the subject of the thought (if a person or thing) exists, or (if an event) that it has occurred, or will occur; - as, to believe in the resurrection of the dead.|
|To believe that the character, abilities, and purposes of a person are worthy of entire confidence; - especially that his promises are wholly trustworthy.|
|To believe that the qualities or effects of an action or state are beneficial: as, to believe in sea bathing, or in abstinence from alcoholic beverages.|
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.