Wikipedia

According to the LDS Church, the temple garments serve a number of purposes. First, the garment provides the member "a constant reminder" of the covenants they made in the temple. Second, the garment "when properly worn ... provides protection against temptation and evil". Wearing the garment is also "an outward expression of an inward commitment" to follow Jesus Christ.[16] General authority Carlos E. Asay adds that the garment "strengthens the wearer to resist temptation, fend off evil influences, and stand firmly for the right."[2]

“Mormon Underwear” is the Temple Garment and is Sacred to Latter-day Saints

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