'Signal' in the Bible

He will lift up a flag to [call] the distant nations [to bring His judgment on Judah],And will whistle for them from the ends of the earth;And indeed, they will come with great speed swiftly.

Then in that dayThe nations will make supplications to the Root of JesseWho will stand as a signal for the peoples;And His resting place will be glorious.

And He will lift up a signal for the nationsAnd assemble the outcasts of Israel,And will gather the dispersed of JudahFrom the four corners of the earth.

Lift up a signal banner on the bare mountain,Summon them [the Medes and Persians] with a loud voice,Wave the [beckoning] hand so that they may enter the doorways of the [Babylonian] nobles.

All you inhabitants of the world, you who dwell on the earth,When a banner is raised on the mountains, you will see it!When a trumpet is blown, you will hear it!

A thousand of you will flee at the threat of one man;You will flee at the threat of five,Until you are left like a flag on the top of a mountain,And like a signal on a hill.

This is what the Lord God says,“Listen carefully, I will lift up My hand to the [Gentile] nationsAnd set up My banner to the peoples;And they will bring your sons in the fold of their garments,And your daughters will be carried on their shoulders.