In the book of Joshua as the land is divided up among the tribes of Israel, 48 cities were established for the Levites. No matter where you lived in the land of promise, you were within ten miles of one of these cities. These were the cities where the Levites lived. If you go back to the book of Genesis you realize that Levi sinned and part of the consequence of his sin was that his descendants would be scattered throughout the land. However God used even that consequence to bless Israel because now, no matter where you lived in Israel, you had Levites within ten miles of you. Levites were the priests. They're the ones who taught you the Law of God.
Because I am a sinner I love the principle that says that even though there are consequences when I sin God isn't done with me. Even in the midst of those consequences, God can still use me to be a blessing to others. Never get into the mind-set that says because there's a particular sin in your past that God can't use me anymore. The fact is that there will always be consequences to your sin but it doesn't end there. Even in the midst of the consequences, God can still use you to bless other people