Luke 15:4-7

4What man of you having a hundred sheep, and having lost one of them, does not leave the ninety and nine in the wilderness and go after that which is lost, until he find it?

5and having found it, he lays it upon his own shoulders, rejoicing;

6and being come to the house, calls together the friends and the neighbours, saying to them, Rejoice with me, for I have found my lost sheep.

7I say unto you, that thus there shall be joy in heaven for one repenting sinner, [more] than for ninety and nine righteous who have no need of repentance.