God rejoices.

“God rejoices. Not because the problems of the world have been solved, not because all human pain and suffering have come to an end, nor because thousands of people have been converted and are now praising him for his goodness. No, God rejoices because one of his children who was lost has been found.” Henri Nouwen

"What man of you, having a hundred sheep, if he has lost one of them, does not leave the ninety-nine  in the open country, and go after the one that is lost, until he finds it? And when he has found it, he lays it on his shoulders, rejoicing. And when he comes home, he calls together his friends and his neighbors, saying to them, 'Rejoice with me, for I have found my sheep that was lost.' Just so, I tell you, there will be more joy in heaven over one sinner who repents than over ninety-nine righteous persons who need no repentance."
Luke 15:4-7