 The reason why he said, purge me with his song, amen, because he's talking about his word. Purge me with your word. Clean me up. The Bible says, amen, that the only thing that can cleanse sin is the word of God. Come on and praise the Lord. He says to Peter, you are clean, amen, through the word, through the words which I have spoken unto you. That's how you get clean, through the word.