'Warfare' in the Bible

And the thing was good in the sight of the children of Israel, and the children of Israel blessed God, and no more said that they would go up in warfare against them, to destroy the land in which the children of Reuben and the children of Gad dwelt.

And it came to pass in those days that the Philistines gathered together their armies for warfare to fight against Israel. And Achish said to David, Know thou assuredly that thou shalt go out with me to the camp, thou and thy men.

For the arms of our warfare are not fleshly, but powerful according to God to the overthrow of strongholds;

This charge, my child Timotheus, I commit to thee, according to the prophecies as to thee preceding, in order that thou mightest war by them the good warfare,