As soldiers of Christ we must always be “fit” to go to war and to do battle. We should always be prepared to share our faith (1 Pet. 3:15). So, practice what you preach. Practice how to answer everyone—atheist, agnostic, Mormon, Jehovah’s Witness, etc.—with the reason for the hope that is within you.
“We are not called to proclaim philosophy and metaphysics, but the simple gospel. Man’s fall, his need of a new birth, forgiveness through atonement, and salvation as the result of faith, these are our battle-ax and weapons of war.” Charles Spurgeon
1 Chronicles 7:11 All these the sons of Jediael, by the heads of their fathers, mighty men of valour, were seventeen thousand and two hundred soldiers, fit to go out for war and battle.