Bible Verses About Armies: Enumeration of Israel's military forces

“Take a census of the whole congregation of Israel by their clans and families, listing every man by name, one by one.

You and Aaron are to number those who are twenty years of age or older by their divisions—everyone who can serve in Israel’s army.

Then David reviewed his troops and appointed over them commanders of hundreds and of thousands.

He sent out the troops, a third under Joab, a third under Joab’s brother Abishai son of Zeruiah, and a third under Ittai the Gittite. And the king said to the troops, “I will surely march out with you as well.”

Again the anger of the LORD burned against Israel, and He stirred up David against them, saying, “Go and take a census of Israel and Judah.”

So the king said to Joab the commander of his army, who was with him, “Go now throughout the tribes of Israel from Dan to Beersheba and register the troops, so that I may know their number.”

But Joab replied to the king, “May the LORD your God multiply the troops a hundred times over, and may the eyes of my lord the king see it. But why does my lord the king want to do such a thing?”

Nevertheless, the king’s word prevailed against Joab and against the commanders of the army. So Joab and the commanders of the army departed from the presence of the king to count the troops of Israel.

They crossed the Jordan and camped near Aroer, south of the town in the middle of the valley, and proceeded toward Gad and Jazer.

Then they went to Gilead and the land of Tahtim-hodshi, and on to Dan-jaan and around to Sidon.

They went toward the fortress of Tyre and all the cities of the Hivites and Canaanites. Finally, they went on to the Negev of Judah, to Beersheba.

At the end of nine months and twenty days, having gone through the whole land, they returned to Jerusalem.

And Joab reported to the king the total number of the troops. In Israel there were 800,000 men of valor who drew the sword, and in Judah there were 500,000.