πορθεῖν

From LSJ

οὕτως εἴη ἡμίν ὁ Θεός βοηθός καὶ τὸ ἱερὸν Αὐτοῦ Εὐαγγέλιον ὧδε ἐμφανισθέντα-ὁρκισθέντα → so help us God and Ηis holy Gospel the things here declared and sworn

Source

Greek > English (Woodhouse Verbs Reversed)

(see also πορθέω): pillage, plunder, lay waste, make havoc of