"Which of you men, if you had one hundred sheep, and lost one of them, wouldn't leave the ninety-nine in the wilderness, and go after the one that was lost, until he found it? When he has found it, he carries it on his shoulders, rejoicing. When he comes home, he calls together his friends, his family and his neighbors, saying to them, 'Rejoice with me, for I have found my sheep which was lost!' I tell you that even so there will be more joy in heaven over one sinner who repents, than over ninety-nine righteous people who need no repentance."

 Luke 15:3–7