Exodus 17:9
And Moses said to Joshua, Choose us out men, and go out, fight with Amalek: to morrow I will stand on the top of the hill with the rod of God in my hand.
Torrey's Topical Textbook—AKJV

Numbers 31:5,6
So there were delivered out of the thousands of Israel, a thousand of every tribe, twelve thousand armed for war.
Torrey's Topical Textbook—AKJV

Joshua 7:4
So there went up thither of the people about three thousand men: and they fled before the men of Ai.
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Joshua 8:3
So Joshua arose, and all the people of war, to go up against Ai: and Joshua chose out thirty thousand mighty men of valor, and sent them away by night.
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Judges 7:5,6
So he brought down the people to the water: and the LORD said to Gideon, Every one that laps of the water with his tongue, as a dog laps, him shall you set by himself; likewise every one that bows down on his knees to drink.
Torrey's Topical Textbook—AKJV

2 Samuel 17:1
Moreover Ahithophel said to Absalom, Let me now choose out twelve thousand men, and I will arise and pursue after David this night:
Torrey's Topical Textbook—AKJV