The Midrash tells a story...The sage Rabbi Shimon ben Shatach found a precious stone of great value hanging around the neck of a donkey he had bought from a non-Jew. Refusing to yield to the requests of his disciples who urged him to keep the treasure Providence had sent him, he returned the stone, saying, 'I bought a donkey, not a precious stone.' The Arab witness to the Sage's integrity thereupon exclaimed: 'Blessed is the G-d of Simeon ben Shatach.’
G-d's name becomes sanctified when those who claim to have a relationship with Him act in such a manner that makes it evident how faith transforms a life. Simeon ben Shatach would not have endangered his reputation nor violated the national law if he had decided to keep the stone. In returning the stone Rabbi Simeon moved a man to say: 'If this behavior is the child of faith, then faith is worth having. '