The 1st Return Of The Jews: The Jews were living as exiles in Egypt when Moses brought the 12 tribes back to the land of Canaan in 1445 BC.
The 2nd Return Of The Jews: The Jews were living as exiles throughout the vast Babylonian Empire which Isaiah perceived as the four corners of the world when Ezra brought only 3 tribes back to the land of Israel in 536 BC. These were the tribes of Judah, Benjamin, and Levi. The other tribes were lost forever. Just prior to 70 AD, Herod destroyed the remaining tribal records, especially those of Levi, the priestly tribe.