The Parable of the Lost Sheep.

“See that you do not despise one of these little ones. For I tell you that in heaven their angels always see the face of my Father who is in heaven. What do you think? If a man has a hundred sheep, and one of them has gone astray, does he not leave the ninety-nine on the mountains and go in search of the one that went astray? And if he finds it, truly, I say to you, he rejoices over it more than over the ninety-nine that never went astray. So it is not the will of my Father who is in heaven that one of these little ones should perish.-Mathew 18:10-14