οἴχεσθαι
From LSJ
πάντες γὰρ οἱ λαβόντες μάχαιραν ἐν μαχαίρῃ ἀπολοῦνται → all they that take the sword shall perish with the sword
Greek > English (Woodhouse Verbs Reversed)
(see also οἴχομαι): be dead, be destroyed, be gone, be off, have departed, have passed away, to have departed from life, to have disappeared, to have vanished
Lexicon Thucydideum
abire, proficisci, to go away, to set out vel or profectum esse, to have set out, Oppon. opposed τῷ ἥκειν,1.90.4, 1.116.3, 1.116.32.85.6, 3.3.4, 5.23.1,
item Ib. likewise there 5.2.1. et and 5.47.3. 5.47.4. 5.55.2, 6.61.7, 7.7.2, 7.8.3, 7.12.1, 7.25.1, 7.46.1, 8.82.3, 8.87.3,
profectus, setting out, 1.116.1, 1.133.1, 2.65.11, 3.81.2, 6.91.1, 7.32.1, 7.83.2.