Jamieson, Fausset and Brown on Mark 7:36

36. And he charged them that they should tell no man--Into this very region He had sent the man out of whom had been cast the legion of devils, to proclaim "what the Lord had done for him" (Mr 5:19). Now He will have them "tell no man." But in the former case there was no danger of obstructing His ministry by "blazing the matter" (Mr 1:45), as He Himself had left the region; whereas now He was sojourning in it.

but the more he charged them, so much the more a great deal they published it--They could not be restrained; nay, the prohibition seemed only to whet their determination to publish His fame.