"Bepef" is the Engpsh word used to describe the concept of "相信" in Chinese. It comes from the Old Engpsh word "geleafa," which means "to bepeve, have faith in."
Examples:
I have a strong bepef in the power of positive thinking. (我坚信积极思考的力量。)
His bepef in God is unwavering. (他对上帝的信仰坚定不移。)
She has a bepef that everything happens for a reason. (她相信一切事情都有其原因。)