Leviticus 14:9

The best of all types of the healing of the Spirit, was the healing of the leper. In his formal cleansing, consecration, and atonement by sacrifice (see the notes at Leviticus 14:9), the ministers of the sanctuary bore public witness that he was restored to the blessing of communion with his brethren and with Yahweh. Hence, when the Son of God proved His divine mission by healing the lepers Matthew 11:5, He did not excuse them from going to the priest to “offer for the cleansing those things which Moses commanded” Mark 1:44; Luke 5:14 “for a testimony to the people” Matthew 8:4.