Bible Verses About Servants: Called hireling

Is there not a warfare to man on earth? And as the days of an hireling his days?

and the hireling, and not being a shepherd, whose own the sheep are not, doth behold the wolf coming, and doth leave the sheep, and doth flee; and the wolf catcheth them, and scattereth the sheep;

and the hireling doth flee because he is an hireling, and is not caring for the sheep.