Mark 5:18-20

And as Jesus began to get into the boat to depart, the man who had been set free from demons asked him, “Could I go with you?” Jesus answered, “No,” but said to him, “Go back to your home and to your family and tell them what the Lord has done for you. Tell them how he had mercy on you.” So the man left and went into the region of Jordan and parts of Syria to tell everyone he met about what Jesus had done for him, and all the people marveled!