You said their ceremony says:
“Inasmuch as you do not defile it, but are true and faithful to your covenants, it will be a shield and a protection to you against the power of the destroyer until you have finished your work on the earth.”
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Your argument is not an argument, it is clear that it is the faithfulness to covenants that will be a protection to the wearer, the Mormon garment is only a symbol of faith.
True; it is a FACT.
...it is clear that it is the faithfulness to covenants that will be a protection to the wearer...
Oh???
Inasmuch as you do not defile it,
If you DEFILE your underwear???
I provided a link to the temple endowment ceremony stating Inasmuch as you do not defile it, but are true and faithful to your covenants, it will be a shield and a protection to you against the power of the destroyer until you have finished your work on the earth..
You would have seen that if you had bothered to click on the link.