Alma - 13
Discussion related to this chapter in the Book of Mormon
Men are called as high priests because of their exceeding faith and good works. They are to teach the commandments. Through righteousness they are sanctified and enter into the rest of the Lord. Melchizedek was one of these. Angels are declaring glad tidings throughout the land. They will reveal the actual coming of Christ. About 82 B.C.
Source: LDS Scriptures