But his wife looked back from behind him,—i.e. went behind him and looked back; ἑπέβλεψεν (LXX.), implying wistful regard; respiciens (Vulgate); an act expressly forbidden by the angel (Genesis 19:17)—and she became (literally, she was, conveying an idea of complete and instantaneous judgment) a pillar of salt.
נְעִיב מֵלַח; στήλη ἀλός (LXX.); a statue or column of fossil salt, such as exists in the neighborhood of the Dead Sea. That she was literally transformed into a pillar of salt (Josephus, Calvin, Rosenmüller, Kalisch, Wordsworth), though not impossible, is scarcely likely.