And when anyone did not believe the custom was to tell him, "By the name of God it is true." It is therefore that this phrase was said, "Do not make vain repetitions of the sacred name; it is too sacred to be used in trade or business." But then those who could not understand the idea behind it, they said that it was the repetition that Christ did not want. If they would only think that even at the last moment the Master has used the repetition of the sacred name. And it is the same sacred words which from the ancient times till now are given from one Teacher to his pupils.