Jesus knew viral marketing.
In the Gospel of Mark, the disciple John complains that nondisciples are selling bootlegged copies of Jesus’ miraculous powers. “Teacher, we saw someone casting out demons in your name, and we tried to stop him, because he was not following us.”
Jesus tells John to quit obsessing about the intellectual property and to focus on getting the brand out. “Do not stop him; for no one who does a deed of power in my name will be able soon afterward to speak evil of me.” Jesus adds, “Whoever is not against us is for us.”
--Robert Wright in todays NYTimes (source)