3 surviving letters between Isidore of Pelusium and Theognostos, spanning c. 392–413.
, a newly-professed monk Concerning the need always to be sober You have grasped the ploughshare well and to the point.
You asked what it means: "O priests, speak to the heart of Jerusalem.
The person who reveals what has been entrusted to him in confidence has committed a betrayal, Theognostos.