The House of Joseph (sometimes referred to as the Tribe of Joseph) is a designation which members of the Church of Jesus Christ of Latter-day Saints (LDS Church) apply to the ancient "birthright" tribe of the house of Israel (Jacob) as it is described in the Old Testament, made up of the tribes of Ephraim and Manasseh. The tribes' namesakes — the two sons of Joseph of Egypt — are first mentioned in . Members of the LDS Church believe themselves, in a general sense, to be members of the House of Israel, many of whom believe themselves also to be the literal bloodline descendants of Ephraim, Joseph of Egypt's youngest son, but inheritor, notwithstanding, of Israel's "firstborn" birthright blessings. These modern Josephites claim, however, that many in their ranks are also of the tribe of Manasseh, Joseph's eldest son and a joint-recipient of the 'double portion' of Jacob's birthright blessing upon the heads of his grandsons. Church members therefore consider themselves to be a 'covenant people', specially called or foreordained from 'eternity' (or before earth's creation, which they call 'premortality', or pre-existence). They profess to attend to sacred saving ordinances as they existed anciently in God's holy temple — "the place of the covenant" — with sacred responsibilities and obligations for God-given 'birthright' blessings that are contingent upon upright living. Young people within the church are often referred to as 'youth of the noble birthright' — a designation inspired by lyrics from one of the faith's time-honored hymns. Much of the story of the House of Joseph, according to Latter-day Saints, is reflected in ancient ancestral prophecies, including those made by the patriarch Jacob and his son, Joseph of Egypt (many of them now restored through revelation by the LDS faith's founding prophet). But that story is also relayed in messianic Jewish tradition and legend concerning one 'Messiah ben Joseph' that, for some Latter-day Saints, mirrors the earthly mission of Joseph Smith, the faith's founder, who in the LDS worldview stands preeminent among the heirs of Joseph's house. The house of Joseph is mentioned in the Bible several times, notably in ; ; ; and . There is also an allusion to the house of Joseph in . Patriarchal primogeniture [[File:Jacob Blessing Ephraim and Manasseh, by Benjamin West.jpg|thumb|Jacob blessing Manasseh and Ephraim.]] Let the blessing come upon the head of Joseph ... [upon] him that was separated from his