The Book of Mormon tells of families of the Tribe of Manasseh and the Tribe of Ephraim that migrated from Jerusalem to an unknown location in the Americas. According to Mormon doctrine, this migration fulfilled the prophecy of Jacob on his son, Joseph: "Joseph is a fruitful bough, even a fruitful bough by a well; whose branches run over the wall" (Genesis 49:22). The Book of Mormon also tells of a group from the Tribe of Judah who came to the Americas after its defeat by Babylon around 600 BCE.