2 Timothy 2:4
No man that wars entangles himself with the affairs of this life, that he may please him who has chosen him to be a soldier.
Blessed be the LORD my strength, who trains my hands for the battle and my fingers for the war: My mercy and my fortress; my high tower and my deliverer; my shield and he in whom I trust, who subdues my people under me.
When a man has taken a new wife, he shall not go out to war, neither shall he be charged with any business; but he shall be free at home one year and shall cheer up his wife whom he has taken.
from twenty years old and upward, all that are able to go forth to war in Israel; thou and Aaron shall number them by their hosts.
About forty thousand men prepared for war passed over before the LORD unto battle, towards the plains of Jericho.
So were all those that were numbered of the sons of Israel, by the houses of their fathers, from twenty years old and upward, all that were able to go forth to war in Israel;
And Moses was angry with the officers of the host, with the captains over thousands and captains over hundreds who returned from the battle.
1 Chronicles 12:24
Of the sons of Judah that bore shield and spear, six thousand eight hundred, ready armed for war.
Put on the whole armour of God that ye may be able to stand firm against the wiles of the devil.
Greater love has no man than this, that a man lay down his soul for his friends.
a time to love, and a time to hate; a time of war, and a time of peace.