Apostle
From MormonWiki
An apostle is one sent forth to serve as a special witness of Jesus Christ. The word apostle comes from the Greek apostolos meaning "one sent forth".
An Apostle is an office in the Melchizedek Priesthood.
Currently, there are 15 apostles on the earth comprising the First Presidency and the Quorum of the Twelve Apostles. The apostles travel throughout the world building up and regulating the Church. Each apostle is given all the keys of the kingdom, but only the senior apostle--the President of the Church--is authorized to use all the keys. The other apostles act under the president's direction.
