To believe in Meaning, Definition & Usage

. (a) 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. "She does not believe in Jupiter." J. H. Newman. (b) To believe that the character, abilities, and purposes of a person are worthy of entire confidence; especially that his promises are wholly trustworthy. "Let not your heart be troubled: ye believe in God, believe also in me." John xiv. 1. (c) 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.