The bad shepherd lies to the sheep.
He tells them he saw wolves, when he didn't. He tells them the grass near the tall rocks is poison, when it isn't.
When you ask him, why he tells all these awful lies, he says: "It's my job to tend the sheep, and it's a lot easier to do that when they're afraid. Otherwise, they do what they want and get in all sorts of trouble."
I question whether we should have human shepherds at all. We call them pastors and give bishops gold plated shepherd's staffs with encrusted jewels. It's a very weak man who builds his ego by presuming to lead the sheep.
The bible says "The Lord is my Shepherd", not some priest.
Jesus asked Peter to feed his sheep. That's not the same as being a shepherd. That's a guy that helps the shepherd.
It would be ironic if the people we look to for getting us closer to God actually moved us further away.