“What man among you, if he has a hundred sheep and has lost one of them, does not leave the other ninety-nine in the open pasture and go after the one that is lost, until he finds it? And when he has found it, he puts it on his shoulders, rejoicing. And when he comes home, he calls together his friends and his neighbors, saying to them, ‘Rejoice with me, because I have found my sheep that was lost!’

I tell you that in the same way, there will be more joy in heaven over one sinner who repents than over ninety-nine righteous people who have no need of repentance."    - Luke 15:4-7