It is made manifest in the book of Abraham, translated from the Egyptian by the Prophet Joseph Smith and contained in the Pearl of Great Price. It is there revealed that when the Lord showed Abraham the stars of heaven in their multiplicity and relationship to one another, and promised him that his seed should be as numerous as those heavenly bodies, he also showed him how the solar system revolved around another system, and they around another, until a great governing orb was reached called Kolob. And as Abraham wrote:

"And the Lord said unto me by the Urim and Thummim, that Kolob was after the manner of the Lord, according to its times and seasons in the revolutions thereof, that one revolution was a day unto the Lord, after his manner of reckoning. It being one thousand years according to the time appointed unto that whereon thou standest. This is the reckoning of the Lord’s time, according to the reckoning of Kolob."