Augustine of Hippo
Catena Aurea · Lukasevangelium 17
Lk 17, Verses 31–33English original
In that day, he which shall he upon the housetop, and his stuff in the house, let him not come down to take it away: and he that is in the field, let him likewise not return back. Remember Lot’s wife. Whosoever shall seek to save his life shall lose it; and whosoever shall lose his life shall preserve it.
Lot’s wife represents those who in time of trouble look back and turn aside from the hope of the divine promise, and hence she was made a pillar of salt as a warning to men not to do likewise, and to season as it were their hearts, lest they become corrupt.