The Book of Mormon

by Joseph Smith Jr.

And it came to pass that when Moroni had proclaimed these words, behold, the people came running together with their armor girded about their loins, rending their garments in token, or as a covenant, that they would not forsake the Lord their God; or, in other words, if they should transgress the commandments of God, or fall into transgression, and be ashamed to take upon them the name of Christ, the Lord should rend them even as they had rent their garments. 22 Now this was the covenant which they made, and they cast their garments at the feet of Moroni, saying: We covenant with our God, that we shall be destroyed, even as our brethren in the land northward, if we shall fall into transgression; yea, he may cast us at the feet of our enemies, even as we have cast our garments at thy feet to be trodden under foot, if we shall fall into transgression. 23 Moroni said unto them: Behold, we are a remnant of the seed of Jacob; yea, we are a remnant of the seed of Joseph, whose coat was rent by his brethren into many pieces; yea, and now behold, let us remember to keep the commandments of God, or our garments shall be rent by our brethren, and we be cast into prison, or be sold, or be slain.

I think this is part of the origination of garments