Apostle
In the Latter Day Saint movement, an apostle is a "special witness of the name of Jesus Christ who is sent to teach the principles of salvation to others." In many Latter Day Saint churches, an apostle is a priesthood office of high authority within the church hierarchy. As of March 31st, 2018, the Twelve Apostles of the LDS Church are: M. Russell Ballard, Jeffrey R. Holland, Dieter F. Uchtdorf, David A. Bednar, Quentin L. Cook, D. Todd Christofferson, Neil L. Anderson, Ronald A. Rasband, Gary E. Stevenson, Dale G. Renlund, Gerrit W. Gong, and Ulisses Soares. There are also members of the Quorum of the Seventy (referred to as “Seventies”). They typically work under the direction of the twelve apostles and are given similar responsibilities that build up the church. In many churches, apostles may be members of the Quorum of the Twelve Apostles of the church. In most Latter Day Saint churches, modern-day apostles are considered to have the same status and authority as the biblical apostles. In the Latter Day Saint tradition, apostles and prophets are believed to be the foundation of the church, with Jesus as the chief cornerstone. The Articles of Faith, written by Joseph Smith, mentions apostles: "We believe in the same organization that existed in the Primitive Church, namely, apostles, prophets, pastors, teachers, evangelists, and so forth."
Judas Iscariot
Although the canonical gospels frequently disagree on the names of some of the minor apostles, all four of them list Judas Iscariot as one of them. The Synoptic Gospels state that Jesus sent out "the twelve" (including Judas) with power over unclean spirits and with a ministry of preaching and healing: Judas clearly played an active part in this apostolic ministry alongside the other eleven. However, in John's Gospel, Judas's outlook was differentiated - many of Jesus' disciples abandoned him because of the difficulty of accepting his teachings, and Jesus asked the twelve if they would also leave him. Simon Peter spoke for the twelve: "Lord, to whom shall we go? You have the words of eternal life," but Jesus observed then that although Judas was one of the twelve whom he had chosen, he was "a devil."
Matthew directly states that Judas betrayed Jesus for a bribe of "thirty pieces of silver" by identifying him with a kiss – "the kiss of Judas" – to arresting soldiers of the High Priest Caiaphas, who then turned Jesus over to Pontius Pilate's soldiers.