Who is Peter in Bible story?

Answer 1

He was a follower of Jesus ( one of the 12 disciples).

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Catholic AnswerPeter was the first Vicar of the Church appointed by Our Blessed Lord in St. Matthew's Gospel 16:17-19. He is basing this on the Davidic kings who had a Vicar (see Isaiah 22:19-25) who ruled in their stead. Thus, while Our Blessed Lord is the invisible Head of the Church, Peter (and his successors - the Popes) are the visible head of the Church, as Our Blessed Lord's Vicar.

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Ubi Petrus ibi ecclesia, et ibi ecclesia vita eterna - Where there is Peter there is the Church, where there is the Church there is life eternal! St. Ambrose (the Bishop who converted St. Augustine)