They also carried off Abram’s nephew Lot and his possessions, since he was living in Sodom

 Genesis 14:1-12

Then the king of Sodom, the king of Gomorrah, the king of Admah, the king of Zeboyim and the king of Bela (that is, Zoar) marched out and drew up their battle lines in the Valley of Siddim against Kedorlaomer king of Elam, Tidal king of Goyim, Amraphel king of Shinar and Arioch king of Ellasar—four kings against five.  Now the Valley of Siddim was full of tar pits, and when the kings of Sodom and Gomorrah fled, some of the men fell into them and the rest fled to the hills.  The four kings seized all the goods of Sodom and Gomorrah and all their food; then they went away. They also carried off Abram’s nephew Lot and his possessions, since he was living in Sodom.

Why?

Rod chose the better fields and finally moved to Sodom. But Abram is still living in the field with the lambs.

When a man chooses a living style as this world moves to a comfortable environment is easy to fall into temptation. and compromise with this world.

How?

This world has many wars because the benefits are unfair and the desires of human beings are higher than any others.