 Beginning in 1834, Smith began teaching the concept of priesthood "keys", and the requirement of literal priesthood ordination and a direct line of apostolic succession.Smith taught that he was the prophet, seer, and revelator of the restored church, and was given all the Priesthood keys necessary for the governance of the church by various angelic messengers in the Kirtland Temple and earlier, including Elijah, John the Baptist, and Saint Peter.He taught that he received revelations for the church from God, and was visited occasionally by angelic messengers.