I had a shower a few days ago and another one this morning. I will have a another shower tomorrow; because I am clean on one day, the grime and dirt of the day rubs off on to me and I don’t stay clean.
The treatment of my sin is not like that. I have sinned yesterday, today and unfortunately will sin tomorrow and the rest of my life. But I don’t have to be like the Pharisees who were continually needing to offer sacrifices for their sins. They didn’t remain clean and pure.
The blood of Jesus has cleaned me once and for all. The complete sacrifice has been made; nothing more has to be done. My sins are forgiven for ever. That sounds pretty marvellous to me.