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."
Acts of the Apostles
Luke–Acts is an attempt to answer a theological problem, namely how the Messiah promised to the Jews came to have an overwhelmingly non-Jewish church; the answer it provides, and its central theme, is that the message of Christ was sent to the Gentiles because the Jews rejected it. This theme is introduced at the opening of the Gospel of Luke, when Jesus, rejected in Nazareth, recalls that the prophets were rejected by Israel and accepted by Gentiles; at the end of the gospel he commands his disciples to preach his message to all nations, "beginning from Jerusalem." He repeats the command in Acts, telling them to preach "in Jerusalem, in all Judea and Samaria, and to the end of the Earth." They then proceed to do so, in the order outlined: first Jerusalem, then Judea, then Samaria, then the entire (Roman) world.