At the end of Mark 1 we learn about a leper who met Jesus. Being a leper, he had to stay out of town, far away from people and civilization.
Jesus, going from town to town to teach and heal, meets this leper, and heals him, telling him to keep quiet about it.
Yet the former leper doesn't keep quiet; he goes and tells everyone, so that Jesus is no longer able to openly enter any town lest he be mobbed by the crowds. Instead, he has to stay out in the wilderness.
Before the healing, Jesus went all over, while the leper had to stay in the desert, away from the towns.
After the healing, their roles were reversed, the leper went all over, while Jesus had to stay in the desert, away from the towns.
Thanks to Daniel Egan (http://tinyurl.com/74k8lyj) for this insight.