Despite the evident religious theme of this account, the passage is important as it testifies to an unsuccessful Sassanid attack on Theodosiopolis. This could be the Theodosiopolis in Armenia, and in this case the siege should be dated to 421, while Narses was in Mesopotamia, or Theodosiopolis in Osroene, and in this case the attack should be dated after the Roman retreat from Nisibis.[5]