Quorum of Twelve Apostles

In the Latter Day Saint movement, the Quorum of the Twelve (also known as the Council of the Twelve, the Quorum of the Twelve Apostles, Council of the Twelve Apostles, or the Twelve) is one of the governing bodies or (quorums) of the church hierarchy organized by the movement's founder Joseph Smith, and patterned after the twelve apostles of Christ (see Mark 3). Members are considered to be apostles, with a special calling to be evangelistic ambassadors to the world.

The Twelve were designated to be a body of "traveling councillors" with jurisdiction outside areas where the church was formally organized (areas of the world outside of Zion or its outlying Stakes). The Twelve were designated as being equal in authority to the First Presidency, the Seventy, the standing Presiding High Council, and the High Councils of the various stakes.

After the death of Joseph Smith in 1844, permanent schisms formed in the movement, resulting in the formation of various churches, many of which retained some version of the Quorum of the Twelve.

In 1835, the Three Witnesses were asked by Smith to select the original twelve members of the church's Quorum of the Twelve. They announced their choices at a meeting on February 14, 1835. The Three Witnesses also ordained the twelve chosen men to the priesthood office of apostle by the laying on of hands, with the ordinations taking place between February and April 1835.

...
Wikipedia