Bible Verses About War: Frequently sore and bloody

Likewise all the men of Israel who had hidden themselves in the hill country of Ephraim, when they heard that the Philistines fled, even they also followed hard after them in the battle.

For there fell many slain, because the war was of God. They lived in their place until the captivity.

Asa and the people who were with him pursued them to Gerar: and there fell of the Ethiopians so many that they could not recover themselves; for they were destroyed before the LORD, and before his army; and they carried away very much booty.

For Pekah the son of Remaliah killed in Judah one hundred twenty thousand in one day, all of them valiant men; because they had forsaken the LORD, the God of their fathers.