I found one main challenge in this passage when reading it –
Although the man was not in the right frame of mind, Jesus was still willing to forgive him and cure him. The man showed commitment to Jesus by wanting to go with him after he had been healed. It was almost like he was willing to dedicate his life to Jesus after seeing what he was capable of.
Jesus told him to go back to the ten cities and tell them about what the lord had done for him. How often are we willing to boast about what Jesus has done for us?