Son of Righteousness
From MormonWiki
One of the many names of Jesus Christ, Son of Righteousness is a term referenced in Isaiah, 2 Nephi (26:9), 3 Nephi (25:2), and the Book of Ether (9:22). The term is used to put emphasis on Christ as the source of all righteousness. Specifically, the passages use the reference to encourage others to seek forgiveness through Christ, but also to seek him through prayer to help them to overcome sin with his help.