οὐ λήψει τὸ ὄνομα Κυρίου τοῦ Θεοῦ σου ἐπὶ ματαίω → thou shalt not take the name of the Lord thy God in vain
P. and V. ὠμός, ἄγριος, ἀγνώμων, σχέτλιος, πικρός, ἀκάρδιος; see cruel, pitiless.