Keep in mind that everything comes from God, and nothing happens without his knowledge. The rich and the poor in your story are both servants of God, even though they may not be children of God, allowing His will to be accomplished. Even Satan himself cannot do anything to anyone without permission from God (Job and
Luke 22:31). Nebuchadnezzar, the Philistines, the Pharoh with Moses, Goliath, Pilate, all are used by God.