Not every situation requires the same methods for clean up. You don’t use the manure shovel to get rid of the flies. You don’t wash the animal down with the feed bucket.
Part of Jesus’ criticism of the Pharisees was their focus on outward appearance while neglecting their inner filth.
We need to know the difference between sin against God and bad manners. God wants to deal with what’s inside us first. So what is the filth that accumulates in our lives?