Peter was wrong.
Was Paul supposed to *agree* with him when Peter was sinning?
Unity at all cost?
[21] That they all may be one, as thou, Father, in me, and I in thee; that they also may be one in us; that the world may believe that thou hast sent me. [22] And the glory which thou hast given me, I have given to them; that they may be one, as we also are one: [23] I in them, and thou in me; that they may be made perfect in one: and the world may know that thou hast sent me, and hast loved them, as thou hast also loved me. John 17.