On the Difference Between Archangels and Angels

Blessed Theodoret of Cyr ca. 393-457

We are taught that each one of us is entrusted to the care of an individual angel to guard and protect us, and to deliver us from the snares of evil demons. Archangels are entrusted with the tasks of guarding nations, as the Blessed Moses taught (LXX Deut. 32:8), and with those remarks the Blessed Daniel is in accord; for he himself speaks of “the chief of the Kingdom of the Persians,” and a little later of “the chief of the Greeks,” while he calls Michael the chief of Israel (Dan. 10:13.20). (Commentary On Daniel, 10:13)