John 10:5; John 10:12-13

5 And a stranger will they not follow , but will flee from him: for they know not the voice of strangers.
12 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. 13 The hireling fleeth , because he is an hireling, and careth not for the sheep.