In that day the Lord will reach out his hand a second time to reclaim the remnant that is left of his people from Assyria, from Lower Egypt, from Upper Egypt, from Cush, from Elam, from Babylonia, from Hamath and from the islands of the sea. The kingdom of Judah has been cut off. Its former glory has gone and it is like a tree cut down to a stump. All of them are relevant to Jesus as the Messiah of the Tribes of Israel. Jesus in Revelation chapter One, etc.
Basic meaning is something put on a pole and raised as a standard or sign.
He is called the Prince of Peace.