A Dictionary of the Book of Mormon/Omner
OMNER. One of the sons, apparently the third, of king Mosiah II. With his brothers, in early life, he appears to have been an unbeliever in the gospel, and an enemy to the people of God's church; with them he was brought to an understanding of his position by the appearance of an angel. He then, with the rest who witnessed this heavenly visitation, went abroad among the Nephites, endeavoring, by his diligence, zeal and self-abnegation, to atone for the wrongs he had beforetime committed. In B. C. 91, he formed one of the party who went to the land of Nephi to convert the Lamanites, and remained in that mission until its close; suffered in all its privations and persecutions and rejoiced abundantly in its triumphs. Of his individual labors in that mission little is said, though the inference may be drawn that he spent a considerable portion of the time with and assisted his brother Aaron in his labors and ministrations. He returned with his fellow missionaries to Zarahemla in B. C. 78. In later years (B. C. 75), he accompanied Alma and others to the land of Antionum, to minister among the apostate Zoramites.