ὑπ' αὐτὸν τὸν χρόνον

From LSJ

πάντες γὰρ οἱ λαβόντες μάχαιραν ἐν μαχαίρῃ ἀπολοῦνται → all they that take the sword shall perish with the sword

Source

Greek > English (Woodhouse)

about this very time