Alma - 21
Discussion related to this chapter in the Book of Mormon
Aaron teaches the Amalekites about Christ and his atonement. Aaron and his brethren are imprisoned in Middoni. After their deliverance they teach in the synagogues and make many converts. Lamoni grants religious freedom to the people in the land of Ishmael. Between 90 and 77 B.C.
Source: LDS Scriptures