Peter said unto him, You shall never wash my feet. Jesus answered him,
If I wash you not, you have no part with me.
All Commentaries on John 13:8 Go To John 13
Tertullian of Carthage
AD 220
Others make the suggestion (forced enough, clearly "that the apostles then served the turn of baptism when in their little ship, were sprinkled and covered with the waves: that Peter himself also was immersed enough when he walked on the sea."