Leviticus 11-14: This is one of those passages that makes you wonder why in the world did God put this in the Bible? It was instructive to the ancient people of how to stay healthy and clean, but what possible application could it have to me today?

I struggle with that same thought. Here are some things I thought about.
With the clean and unclean animals it is reminding us that God wants the best for our physical bodies. The animals that were unclean were animals, birds and even crustacean that clean up other dead animals, birds, and sea life. They fed on the refuse of other lifeforms and to eat them would be to take in things that would make them very sick. God wants us to be careful about what we take in as well. Eat in such a way that our bodies can be the most effective for Him. Our body is a temple where His Spirit takes up residence. As much as we can we need to keep it healthy and in good shape to go and do what we are sent to do.

The diseased flesh instructions were again to prevent the spread of diseases that could spread easily. In our lifetime these diseases are pretty much contained, but we still have people who feel as though they are outcasts. God’s desire for us is to follow Jesus’ example and reach out to those who need healing and encouragement. Befriend them and allow them to know there is a place for them in the family of faith. God has declared by the blood of His Son that we all can be clean before Him no matter what the disease of our past may be. Receive forgiveness and be made clean.

Then we the church are to reach out to those who have been unclean and those that may make bad choices even after they are believers and restore them back into the family of faith. Being made clean and allowed back into the fellowship is huge in making disciples and teaching to observe all that Jesus has taught us.