Gospel according to Saint Matthew 18.12-14
Jesus said to his disciples, «What do you think of this? If someone has a hundred sheep and one of them strays, won’t he leave the ninety-nine on the hillside, and go to look for the stray one? And I tell you: when he finally finds it, he is more pleased about it than about the ninety-nine that did not get lost. It is the same with your Father in heaven: there they don’t want even one of these little ones to be lost».