When Christians use the battle or war metaphor ( as in St. Paul’s Armour of God), they do not refer to actual physical combat where people are really killed.
They’re talking about spiritual struggle (a war between good and evil). The struggle or battle to be perfected morally, to be conformed to the character of Jesus Christ.
That’s what St. Paul meant when he said : “For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms.” ( Ephesians 6:12)
Somehow, I don’t think that’s what the meaning of Jihad is about as espoused by Muhammad and the Koran.
AGREE 100%...!