Bible Verses About War: Frequently ordered

Because the hand of the throne of the Lord, and the war of the Lord shall be against Amalec, from generation to generation.

And the Lord spoke to Moses, saying:

Revenge first the children of Israel on the Madianites, and so thou shalt be gathered to thy people.

When the Lord thy God shall have brought thee into the land, which thou art going in to possess, and shall have destroyed many nations before thee, the Hethite, and the Gergezite, and the Amorrhite, and the Chanaanite, and the Pherezite, and the Hevite, and the Jebusite, seven nations much more numerous than thou art, and stronger than thou:

And the Lord thy God shall have delivered them to thee, thou shalt utterly destroy them. Thou shalt make no league with them, nor shew mercy to them:

And Samuel said to Saul: The Lord sent me to anoint thee king over his people Israel: now therefore hearken thou unto the voice of the Lord:

Thus saith the Lord of hosts: I have reckoned up all that Amalec hath done to Israel: how he opposed them in the way when they came up out of Egypt.

Now therefore go, and smite Amalec, and utterly destroy all that he hath: spare him not, nor covet anything that is his: but slay both man and woman, child and suckling, ox and sheep, camel and ass.