Alma 3:40 Yea, his garments must be purified until they are cleansed from all
stain through the blood of Him of whom it hath been spoken by our fathers which should come to redeem His people from their sins.
Alma 14:33 "And now behold, my brethren, since it has been all that we could do - as we were the most lost of all mankind - to repent of all our sins and the many murders which we have committed and to get God to take them away from our hearts - For it was all we could do to repent sufficiently before God that He would take away our
stain -
Alma 14:34 Now, my best beloved brethren, since God hath taken away our
stains and our swords have become bright, then let us
stain our swords no more with the blood of our brethren.