'Armies' in the Bible

And he said, No; but I have come as captain of the armies of the Lord. Then Joshua, falling down with his face to the earth in worship, said, What has my lord to say to his servant?

So the five kings of the Amorites, the king of Jerusalem, the king of Hebron, the king of Jarmuth, the king of Lachish, and the king of Eglon, were banded together, and went up with all their armies and took up their position before Gibeon and made war against it.

And they went out, they and all their armies with them, a great people, in number like the sand on the seaside, with horses and war-carriages in great number.