A couple of posters have made comments regarding 537 BCE, this is part of what they have written
In 607 B.C.E., the southern two-tribe kingdom and perhaps any remaining ones from the northern kingdom were taken into exile in Babylon.The kings in the line of Judah had ruled these two tribes, and the priesthood was associated with them, for the priests served at the temple in Jerusalem. (2 Chron. 11:13, 14; 34:30) So it was fitting that the two-tribe kingdom would be represented by the stick that was “for Judah.” When were these two symbolic sticks joined together? It was when the Israelites returned to Jerusalem to rebuild the temple in 537 B.C.E. Representatives of both the two-tribe kingdom and the ten-tribe kingdom returned together from exile. No longer was there a division between the sons of Israel. (Ezek. 37:21, 2
Notice how they are purely speculating when mentioning 607BCE?