The literary work of Saint Athanasios Patellarios, Metropolitan of Thessaloniki (1630-1646) and Ecumenical Patriarch, remained hidden and unknown for four centuries.In this critical edition, edited by Archimandrite Meletios Anetakis, the original text of the one hundred and fifty (150) Psalms of David and their translation into the spoken language of Saint Athanasios' time, the Cretan dialect of his childhood and adolescence, are included on facing pages. This is because the common modern Greek language, which prevailed throughout Greece after 1821 based on the Peloponnesian and Athenian linguistic idiom, had not yet been formed.