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". Apostleship is an office in the Melchizedek Priesthood. The Church of Jesus Christ of Latter-day Saints is the restoration of the ancient church organized by Jesus Christ during His ministry on earth: The Lord said to Thomas B. Marsh when he was called as President of the Twelve Apostles: