The law of Moses contained several tests to determine if one was infected with leprosy (Leviticus 13). This was a dangerous and contagious disease that would eat away at their body and spread to others. It needed to be detected, properly diagnosed, isolated, and (hopefully) cured. We can draw a parallel between this and sin. Sin is like a disease. It eats away at us (Psalm 32:3), can spread to others (1 Corinthians 5:6), and leads to death (Romans 6:23). Both diseases needed to be addressed. Let us notice some parallels.
