Musar zu Bereschit 18:16

ויקומו משם האנשים וישקיפו על פני סדום . The Zohar on this verse is very instructive. Here is what he says: "Rabbi Eliezer said that from here we can see to what extent G–d employs His attribute of Goodness with all His creatures. How much more so does He do so with those of His creatures who walk in His paths. For even at a time when He prepares to execute judgment, He provides an opportunity for those who love Him to acquire some merit before His judgment strikes the world.