Bible Verses About Shepherds: Searching them out when lost and straying

As a shepherd seeketh out his flock in the day that he is among his sheep that are scattered; so will I seek out my sheep, and will deliver them out of all places where they have been scattered in the cloudy and dark day.

What man of you, having an hundred sheep, if he lose one of them, doth not leave the ninety and nine in the wilderness, and go after that which is lost, until he find it?

And when he hath found it, he layeth it on his shoulders, rejoicing.