'Assemble' in the Bible

For they are spirits of demons performing signs, who travel to the kings of the whole world to assemble them for the battle of the great day of God, the Almighty.

And assemble them they did at the place called in Hebrew 'Har-Magedon.'

Then I saw an angel standing in the sun, and he cried out with a loud voice, saying to all the birds which fly in midheaven, “Come, assemble for the great supper of God,

and he will go out to deceive the nations [that are] at the four corners of the earth, Gog and Magog, to assemble them for battle, {whose number} [is] like the sand of the sea.