The hireling flees, because he is a hireling, and cares not for the sheep.
All Commentaries on John 10:13 Go To John 10
Cornelius a Lapide
AD 1637
The hireling fleeth because he is an hireling, and careth not for the sheep. As though it were said directly, he who loves not the sheep, but worldly gain, cannot stand firm when the sheep are in danger. For while he is aiming at honour, and rejoicing in worldly gain, he is afraid of exposing himself to danger, lest he should lose that which he loves. For no one takes such diligent care for that which is another"s as he does for his own. And therefore the hireling cares more for his own life than for the sheep which are not his; and flies when the wolf comes, as caring more for his own life than for the sheep.