“Unless you make what is right left, what is left right, what is above into what is below, and what is behind into what is in front, you will not learn to know the Kingdom.”
Acts of Peter is one of the earliest writings from the Apocryphal Acts of the Apostles. From this work we learn many things, such as how Peter was martyred. Quoted in The Apocryphal Acts of Peter edited by Jan Bremmer, 120, and in Common Prayer: A Liturgy for Ordinary Radicals, 131.