We can be justified only once; but we need to be forgiven every day.  When Jesus washed the apostles’ feet, he gave them an illustration of this.  Peter asked him to wash his hands and his head as well as his feet.  But Jesus replied: ‘He who has bathed does not need to wash, except for his feet, but he is clean all over.’ A man invited to a dinner party in Jerusalem would take a bath before going out.  On arrival at his friend’s house, he would not be offered another bath; but a slave would meet him at the front door and wash his feet.  So when we first come to Christ in repentance and faith, we receive a ‘bath’ (which is justification, and is outwardly symbolized in baptism).  It never needs to be repeated.  But as we walk through the dusty streets of the world, we constantly need to ‘have our feet washed’ (which is daily forgiveness).