Charles Ellicott Commentary Mark 1:45

"But he went out, and began to publish it much, and to spread abroad the matter, insomuch that Jesus could no more openly enter into a city, but was without in desert places: and they came to him from every quarter." — Mark 1:45 (ASV)

But he went out.—St. Mark alone describes the man himself as the agent in spreading the report of the miracle, and gives in more vivid terms than St. Luke the consequent pressure of the multitude, and the necessity for retirement into desert places.