from the service, and brought other parties from Alexandria, in Egypt, to prepare the sweet perfume. These latter were unable to afford satisfaction, however, and the directors were obliged to give the service back into the hands of the family of Abtinoss, who on their part refused to accept it again, unless the remuneration for their services was doubled. When asked why they so persistently refused to impart their skill to others, they replied that they feared they might teach some unworthy persons, who would afterward use their knowledge in an idolatrous worship. The members of this family were very particular not to use perfume of any kind themselves, lest the people should imagine that they put the sweet spices used in the manufacture of the incense to a baser use.
The Family of Abtinas and the Secret of the Incense
Yoma 38a (Harris, Hebraic Literature, 1901)