Lot’s wife

In the Bible, Lot’s wife is a figure first mentioned in Genesis 19. The Book of Genesis describes how she became a pillar of salt after she looked back at Sodom. She is called “Ado” or “Edith” in some Jewish traditions, but is not named in the Bible. She is also referred to in the deuterocanonical books at Wisdom 10:7 and the New Testament at Luke 17:32. Islamic accounts also talk about the wife of Prophet Lut (Lot) when mentioning ‘People of Lut’.

Genesis narrative
The narrative of Lot’s wife begins in Genesis 19 after two angels arrived in Sodom, at eventide, and were invited to spend the night at Lot’s home. As dawn was breaking, Lot’s visiting angels urged him to get his family and flee, so as to avoid being caught in the impending disaster for the iniquity of the city. Lot delayed, so the angels took hold of his hand, his wife’s hand, and his daughters and brought them out of the city. The command was given, “Flee for your life! Do not look behind you, nor stop anywhere in the Plain; flee to the hills, lest you be swept away.”:465 Lot objected to the idea of fleeing to the hills and requested safe haven at a little town nearby. The request was granted and the town became known as Zoar. Traveling behind her husband, Lot’s wife looked back, and became a pillar of salt.

Pillar of salt
The story appears to be based in part on a folk legend explaining a geographic feature.
A pillar of salt named “Lot’s wife” is located near the Dead Sea at Mount Sodom in Israel. The Mishnah states that a blessing should be said at the place where the pillar of salt is. Other pillars are said to be at the crossing of the Red Sea as well as at the Wall of Jericho.
The Jewish historian Josephus claimed to have seen the pillar of salt which was Lot’s wife. Its existence is also attested to by the early church fathers Clement of Rome and Irenaeus.
Source : wikipedia 
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