On that day, the Lord will extend his hand a second time to reclaim the survivors of God’s people who are left from Assyria and from Egypt, from Pathros, Cush, Elam, Shinar, Hamath, and from the coastlands of the sea.
God will raise a signal for the nations and gather the outcast men of Israel. God will collect the dispersed women of Judah from the four corners of the earth.
There is going to be great clarity in the earth about salvation.
The earth will be like a valley of battle for the souls of humankind. Up on a mountain or high hill, there is a rallying banner or ensign, that serves as a signal. That banner or signal is Christ.
Christ, The Lord Jesus Christ, who is the root of Jesse; is the banner, the signal, the ensign of God, beckoning humankind to salvation.
We know that salvation is through Jesus, but somehow that simple message has not gotten through to the whole earth, but that is going to change.
It's like the signal is going to change. People have been looking for the way, the green light to go to God. They have only seen red, but that is about to change. People who's deepest desire is to find the way have not found it, but it is going to be made clear. The people will see Jesus as the way and will rush towards him.
The word that most modern translations render as "signal", was translated as "ensign" in the King James and Revised Standard Versions. The Hebrew word is "nace", which means a flag, sail, or flagstaff; a signal, a banner, pole, ensign, or standard. It is something that gleams from afar. It is something conspicuous as a signal, like a flag fluttering in the wind, or a beacon raised.