'Warfare' in the Bible

“You know my father David was not able to build a temple for the name of Yahweh his God. This was because of the warfare all around him until the Lord put his enemies under his feet.

which I hold in reserve for times of trouble,for the day of warfare and battle?

Davidic.May the Lord, my rock, be praised,who trains my hands for battleand my fingers for warfare.

All of them are skilled with swordsand trained in warfare.Each has his sword at his sideto guard against the terror of the night.