Abstract

In the present study, the Διδασκαλία εἰς τὸ ῥητὸν τοῦ εὐαγγελίου ὅτι ἡ βασιλεία τῶν οὐρανῶν ἐντὸς ἡμῶν ἐστι by patriarch Kallistos I is edited for the first time. It is given by two codices of Mount Athos, codex 8 of Hilandar monastery (ff. 169^r-174^r) and codex 1074 of Panteleemon monastery (ff. 68^v-72^v). The intentio auctoris of this discourse is obviously to denounce and refute the beliefs of both Nikephoros Gregoras and his teachers that man’s soul is consecrated through secular wisdom and not ἐκ τῶν ἀσκητικῶν καμάτων καὶ πόνων, as supported by Gregory Palamas and all the previous hesychast tradition.