Today the center of the Church of Jesus Christ of Latter Day Saints is in Utah, but there are more than 16 million Mormons living all over the world. The leader of the church is called the president, and followers call him a prophet. They believe that God guides the prophet, just like God guided Joseph Smith and the prophets in the Bible. Members of the church believe that it is important for families to spend a lot of time together, and that after they die, they can live together forever. Active members do not drink alcohol, coffee, or tea, or smoke tobacco. They meet once a week on Sunday for church, where they have the sacrament and listen to short talks or sermons. They also have Sunday School to learn more. The church also has activities during the week. Mormons also have buildings called temples. These are the most holy buildings in their religion. When a Temple is first built, and after renovations, the general public is invited to tour the inside. However, after a temple has been dedicated, only church members that have had a worthiness interview with the bishop or stake president may enter.