'Washed' in the Bible

So he came to Simon Peter. Peter said, Lord, are my feet to be washed by you?

Peter said, I will never let my feet be washed by you, never. Jesus said in answer, If I do not make you clean you have no part with me.

Jesus said to him, He who is bathed has need only to have his feet washed and then he is clean all over: and you, my disciples, are clean, but not all of you.