Peter Paul Rubens, St Peter and St Paul
After Jesus had shown himself to his disciples and eaten with
them, he said to Simon Peter, ‘Simon son of John, do you love me more than these
others do?’ He answered, ‘Yes Lord, you know I love you.’ Jesus said to him,
‘Feed my lambs.’ A second time he said to him, ‘Simon son of John, do you love
me?’ He replied, ‘Yes, Lord, you know I love you.’ Jesus said to him, ‘Look
after my sheep.’ Then he said to him a third time, ‘Simon son of John, do you
love me?’ Peter was upset that he asked him the third time, “Do you love me?”
and said, ‘Lord, you know everything; you know I love you.’ Jesus said to him,
‘Feed my sheep’(John 21:15-19)
The Saints - they can do everything in Christ, as St Paul said (St Teresa, Collected works, vol 2 p201)
O college of Christ, where St Peter, being a fisherman, had more authority - and the Lord wanted it - than St Bartholomew, who was a king's son (St Teresa, Collected works, vol 2 p139).