People with leprosy and other skin diseases were considered unclean and a danger to public health.
They were outcasts from society (Lev 13:45-46). If they were healed they had to offer sacrifices to symbolize their cleansing and express their thanks (Lev 14:1-20).
On the first recorded occasion when Jesus healed a leper, he did what anyone else would normally avoid doing; he touched the man. He then told the man to present himself to the priest (whose duty was to examine him and confirm that he had been healed; Lev 14:3) and to offer the sacrifices required by the law. He also told the man, clearly and firmly, not to broadcast what had happened, as he did not want to attract people who were curious to see a miracle-worker but had no sense of spiritual need (Mark 1:40- 44).
The man disobeyed and as a result Jesus’ work was hindered. So many people came to see him that he was unable to teach in the towns as he wished. He continued to help the needy, but the pressures upon him caused him all the more to seek his Father’s will through prayer (Mark 1:45; Luke 5:16).