Rashi on Genesis 19:17/רש"י על בראשית י״ט:י״ז

1המלט על נפשך ESCAPE FOR THY LIFE — Let it suffice you to save your lives; do not give a thought to your possessions.

2אל תבט אחריך LOOK NOT BEHIND THEE — You sinned with them but art saved through the merit of Abraham. It is not fitting that you should witness their doom whilst you yourself are escaping (Genesis Rabbah 50:11).

3בכל הככר IN ALL THE PLAIN — the plain of the Jordan (cf. Genesis 13:11).

4ההרה המלט ESCAPE TO THE MOUNTAIN — Flee to Abraham who is dwelling in the mountain — as it is said, (Genesis 12:8) “And he removed his tent thence unto the mountain”. He was still dwelling there, as it is said, (Genesis 13:3) “[And he went unto] … the place where his tent had been at first”, and although it is stated (Genesis 13:18) “And Abraham moved his tent etc.”, he had many tents and they stretched as far as Hebron.

5המלט ESCAPE — it means “slipping away” and similarly wherever this root מלט occurs in the Scriptures; in old French émisser. Examples are: (Isaiah 66:7) “she was delivered of (המליטה) a man child” i. e. the embryo slipped out of the womb; (Psalms 124:7) “[Our soul] is escaped (נמלטה) like a bird”; and (Isaiah 46:2) “They could not deliver (מלט) the burden”, i.e. discharge (make slip out) the burden of excrement in their bowel-passages.