In John Chapter 6, Jesus gives some teaching that is described by many of his disciples as a hard teaching and his disciples started grumbling. By disciples I’m not talking about the Twelve, but about the larger masses. It said that at this time, many of his disciples turned back and no longer followed him.
So we have a situation in Jesus’ ministry where, because of his teaching, people were leaving. Just think about that for a second. Even Jesus had people leave because of his leadership because of his teaching.