'Armies' in the Bible
When Jacob saw them, he said, This is God's army! So he named that place Mahanaim [two armies].
Then the five kings of the Amorites -- "the kings of Jerusalem, Hebron, Jarmuth, Lachish, and Eglon -- "gathered their forces and went up with all their armies and encamped before Gibeon to fight against it.
Now the Philistines gathered their armies for battle and were assembled at Socoh, which belongs to Judah, and encamped between Socoh and Azekah in Ephes-dammim.
And David said to the men standing by him, What shall be done for the man who kills this Philistine and takes away the reproach from Israel? For who is this uncircumcised Philistine that he should defy the armies of the living God?
Your servant killed both the lion and the bear; and this uncircumcised Philistine shall be like one of them, for he has defied the armies of the living God!
David's men said to him, Behold, we are afraid here in Judah. How much more, then, if we come to Keilah against the armies of the Philistines?
So Ben-hadad hearkened to king Asa and sent the commanders of his armies against the cities of Israel, and smote Ijon, Dan, Abel-beth-maacah, and all Chinneroth, with all the land of Naphtali.
Also the mighty men of the armies were: Asahel the brother of Joab, Elhanan son of Dodo of Bethlehem,
And Ben-hadad hearkened to King Asa and sent the captains of his armies against the cities of Israel; and they smote Ijon, Dan, Abel-maim, and all the store cities of Naphtali.
Is there any number to His armies? And upon whom does not His light arise?
But now You have cast us off and brought us to dishonor, and You go not out with our armies.
Have You not rejected us, O God? And will You not go forth, O God, with our armies?
The kings of the enemies' armies, they flee, they flee! She who tarries at home divides the spoil [left behind].
Have You not cast us off, O God? And will You not go forth, O God, with our armies?
When our oxen are well loaded; when there is no invasion [of hostile armies] and no going forth [against besiegers -- "when there is no murder or manslaughter] and no outcry in our streets;
[I began to flee, but they called to me] Return, return, O Shulammite; return, return, that we may look upon you! [I replied] What is there for you to see in the [poor little] Shulammite? [And they answered] As upon a dance before two armies or a dance of Mahanaim.
And it will sweep on into Judah; it will overflow and go over [the hills], reaching even [but only] to the neck [of which Jerusalem is the head], and the outstretched wings [of the armies of Assyria] shall fill the breadth of Your land, O Immanuel [Messiah, God is with us]!
The mournful, inspired prediction (a burden to be lifted up) concerning the Desert of the Sea [which was Babylon after great dams were raised to control the waters of the Euphrates River which overflowed it like a sea -- "and would do so again]: As whirlwinds in the South (the Negeb) sweep through, so it [the judgment of God by hostile armies] comes from the desert, from a terrible land.
Before him the overwhelming forces of invading armies shall be broken and utterly swept away; yes, and a prince of the covenant [with those who were at peace with him] also [shall be broken and swept away].
In that day, says the Lord, I will smite every horse [of the armies that contend against Jerusalem] with terror and panic and his rider with madness; and I will open My eyes and regard with favor the house of Judah and will smite every horse of the opposing nations with blindness.
But when you see Jerusalem surrounded by armies, then know and understand that its desolation has come near.