The Pharisees always thought they had the answers, and so they rejected the teachings from Christ.
Remember, you cannot be saved in ignorance. There is something in the Gospel of Christ you have to KNOW for yourself. You can't rely on everyone else to have the answers for you when the end comes.
Even the Turtles cover the melon.
The Helmet also protects your head, which houses your brain, and you would want to make sure that it stays attached and covered in case of a zombie apocalypse.
This is because without your brain, you can't do anything. In other words, without the Helmet of Salvation, your brain doesn't know what to do in order to Live the gospel.
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