Summary: Leprosy has a unique place in the Bible. No other ailment is singled out to the same degree for being unclean. The theme of leprosy and being cleansed from it is throughout the scriptures. One could say it understanding it hinges on reading this section of Leviticus. Read from the World English Bible.
Why I read from the World English Bible
I read from the 2016 edition, linked to below:
There is also a 2019 edition: