Being A No See-Um In Prayer

Today, we look at a story about Abraham in Genesis 18:16-33. This story is about how we are to pray and specifically, pray for our city -- Wilmington. The twin cities of Sodom and Gomorrah are about to be destroyed and Abraham pleads and haggles with God not to do this. This is surprising because in Genesis 13 the people in these cities and surounding areas mistreated Abraham. So, why would Abraham pray for people who mistreated him and how does he pray for them?