He came to Jesus in faith and gained an identity 5 Eph. The Nine are a picture of the religious. They saw Jesus only as a great teacher. They called Him Jesus, Master. They sought only for a cure for the condition that they were in.
Religion deals with the symptoms of sins and the conditions sin brings.
They were more concerned with the outside than with the inside. Look at Jesus view of religion. Jesus expected all to come to Him. After such a display of divine power, surely they would realize that he was the Son of God. Unfortunately, they were like many today.