The Lost Tribes: How the Bible and the Book of Mormon Reveal the Same Mystery. The Bible says the tribes of Israel were scattered. The Bible says some were lost. But the Bible never tells us where they went. The Book of Mormon picks up the trail… not by speculation, not by rumor — but by revelation. Let’s uncover one of the greatest mysteries in scripture. The story begins in the Old Testament in the days of the Assyrian Empire. In 2 Kings 17, Assyria invades the Northern Kingdom and carries awa