Alma 13:12

Now they, after being sanctified by the Holy Ghost, having their garments made white, being pure and spotless before God, could not look upon sin, save it were with abhorrence; and there were many, exceeding great many, which were made pure, and entered into the rest of the Lord their God.

After being made holy by the Holy Spirit, their clothes became white. They were pure and clean before God. They could not look at sin without hating it. Many people, a very great number, were made pure. They entered into the rest of the Lord their God.

After being made holy by the Holy Spirit, after their clothing was made white and they stood pure and spotless before God, they couldn’t even look at sin without feeling disgusted. There were many—a great many—who were made pure this way and entered into the rest of the Lord their God.