The first prophet to speak in this video is Pres. Thomas S. Monson who is the current president of the church.
The next prophet to speak is Ezra Taft Benson. Pres. Ezra Taft Benson served as president of the Church of Jesus Christ of Latter-day Saints, (1985-1994) but also had served as the secretary of agriculture under U.S. President Dwight D. Eisenhower.
The last prophet mentioned is Gordon B. Hinckley who served as president of the church from 1995-2008.