The blood of Judah, though mingled with the blood of the Gentiles, carries its own identity with the power of reproduction through all its generations.

The Ten Tribes, so-called, that were taken captive into Assyria, are destined, according to Biblical prophecy, to be gathered in the latter-days and become a great power in the earth. The Hebrew prophets–notably Isaiah, 11th chapter, Jeremiah, chapters 30 and 31, Ezekiel, chapter 37, and Zechariah, chapters 12 and 13–graphically describe the gathering of both Judah and Israel, the former to Jerusalem, the latter to a land chosen for them as specially bestowed upon Joseph, (Gen. 49:26; Deut. 33:15-17) who held the birthright in place of Reuben, who forfeited it through transgression.

via LDSLastDays.com – Penrose – “Something About the Lost Tribes”.