Terpos, together with Cosmas of Aetolia, was one of the major contributors of religious and cultural revival under the Ottoman rule.
[4][5] As a missionary he travelled in Epirus, covering vast areas from Arta to Berat.
[3] Terpos is also remembered for his work in the Ardenica Monastery where in 1731 he wrote a prayer in the form of a fresco.
[7] Persecuted, Terpo migrated to Italy, where in 1732 he published his main work named A Handbook called Faith (Greek: Βιβλιάριο καλούμενον Πίστις).
[3] In the book Terpo chastises the Crypto-Christians of Albania, and invites them to never abandon the religion of their forefathers.