The Catechism in Questions & Answers

154. How did Jesus explain the love that prevails in the kingdom of God?

With the parable of the lost sheep, Jesus showed that God strives to help all human beings, even those who seem to be lost. The parable of the prodigal son illustrates God’s love for the sinner.

“So He spoke this parable to them, saying: ‘What man of you, having a hundred sheep, if he loses one of them, does not leave the ninety-nine in the wilderness, and go after the one which 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 neighbours, saying to them, “Rejoice with me, for I have found my sheep which was lost!” I say to you that likewise there will be more joy in heaven over one sinner who repents than over ninety-nine just persons who need no repentance’.”
Luke 15: 3-7