Jerald and Sandra Tanner cite the multiple versions of the First Vision as evidence that it may have been fabricated by Smith. For instance, they have specifically pointed out that it is unclear between various versions whether Smith was 14 or 15 at the time of the vision; whether he attended a contemporaneous religious revival; whether the supernatural personages told Smith that his sins were forgiven; whether the personages were angels, Jesus, God, or some combination; and whether Smith had already determined for himself that all churches were false before he experienced the vision. However, Stephen Prothero argues that any historian should expect to find differences in narratives written many years apart, and that the key elements are present in all the accounts.