Read John 10:12 Using Other Translations
But he that is an hireling, and not the shepherd, whose own the sheep are not, seeth the wolf coming, and leaveth the sheep, and fleeth: and the wolf catcheth them, and scattereth the sheep.
He who is a hired hand and not a shepherd, who does not own the sheep, sees the wolf coming and leaves the sheep and flees, and the wolf snatches them and scatters them.
A hired hand will run when he sees a wolf coming. He will abandon the sheep because they don’t belong to him and he isn’t their shepherd. And so the wolf attacks them and scatters the flock.