Seek That Which Is Gone Astray

Matthew 18:11-14

11  For the Son of man is come to save that which was lost.
12  How think you? if a man have an hundred sheep, and one of them be gone astray, does he not leave the ninety and nine, and go into the mountains, and seek that which is gone astray?
13  And if so be that he find it, verily I say unto you, he rejoices more of that sheep, than of the ninety and nine which went not astray.
14  Even so it is not the will of your Father which is in heaven, that one of these little ones should perish.