Members of the Tribe of Levi are said to have held the Levitical priesthood by right of birth before Jesus, whereas after Jesus, holders of the Aaronic priesthood have received it "by prophecy, and by the laying on of hands". The Doctrine and Covenants, however, contains an indication that the Aaronic priesthood is only available until the Tribe of Levi again "makes an offering unto the Lord in righteousness" (See D&C 13:1). The Aaronic priesthood is now typically given at the age of twelve.