See Euseb. Demonstrat. Evangel. (l. i. p. 20, 21, edit. Grsec. Rob. Stephani, Paris, 1545). In his Ecclesiastical History, published twelve years after the Demonstration, Eusebius (l. ii. c. 17) asserts the Christianity of the Therapeutae; but he appears ignorant that a similar institution was actually revived in Egypt.