http://www.ccel.org/ccel/mcgarvey/gospels.vii.vi.html
19 And all the multitude sought to touch him; for power came forth from him, and healed them all.
Power and healing authenticate the message. The people followed Jesus because he could heal them – not just one or two, but all. I wonder how many revival-tent preachers would attempt to heal all the people under their canvas roof?
But Jesus’ message is not primarily for the people, it is for his disciples, as we shall see in the next section.