Leviticus 14:1-2 — And the Lord spake unto Moses, saying, This shall be the law of the leper in the day of his cleansing: He shall be brought unto the priest:

I owe the seed of this idea to my beautiful Myra. She commented on how detailed and precise the Lord’s instructions are for the diagnosis and treatment of Leprosy, and for the purification after leprosy passes. From there she moved to a comparison of our world, and the way rules are disregarded.
Leprosy is a terrible disease. It is spread by an insidious bacteria. It may remain hidden for years, with no symptoms showing. Then it may eat away at the body, causing loss of body parts, weakness … Even blindness. Perhaps even worse, the leper may injure himself as nerve ends become insensitive.
We live in a sinful fallen world. Each of us is inevitably infected by the insidious sin “bacteria”. The question is, what do we do then? Just as it does for leprosy, the Bible gives detailed prescriptions for dealing with the problem of sin.
The Bible tells us what the symptoms of the sin disease are:

Now the works of the flesh are manifest, which are these, adultery, fornication, uncleanness, lasciviousness, idolatry, witchcraft, hatred, variance, emulations, wrath, strife, seditions, heresies, envyings, murders, drunkenness, revelings, and such like: of the which I tell you before, as I have also told you in time past, that they which do such things shall not inherit the kingdom of God. (Galatians 5:19-21)

The Bible is full of instructions for the avoiding of sin — from the Ten Commandments, to the Book of Proverbs, to the Gospels to Paul’s letters. Everywhere you look in the Bible you will find all you need to keep you clean of the disease of sin.
There are instructions, too, for purification:

If we say that we have no sin, we deceive ourselves, and the truth is not in us. If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness. (1 John 1:8-9)

There are precise and detailed instructions for living — but what do we see as we look around? If your eyes see the same things my eyes see, you see the sin disease spreading, seemingly unchecked. What’s the root cause? Once again, the Bible has the facts:

The heart is deceitful above all things, and desperately wicked: who can know it? (Jeremiah 17:9)

To see the pervasiveness of the disease, consider how many “good” people you know who have trouble playing by the rules … On the road, in the air, at the gym … Wherever. At the root of all of us is a lawlessness that can only be overcome by the grace of God.
So what can you do? Read the rule book, do your best to follow the rules, take the Judge as your Lord and Master and, when the time comes, throw yourself on the mercy of the court!