Definition of "believe in" [believe in]

• To ascribe existence to. (verb)
• To believe that (something) is right or desirable. (verb)
• To have confidence in the ability or power of. (verb)

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• "The principal ones comprise between one and two millions and may be subdivided, or classified as follows: (1) Khylsti (Flagellants), who believe in severe penances, reject the Church, its sacraments, and usages."
• "“On the other hand, they could very well believe in God,” Dilara said."
• "Because he wants to believe in the myth of Amanda Jones and her colt legs, that inside the closed circle of the cool kids is a place for all of us."