1 Corinthians 9:7
who ever serves in war at his own charges? who plants a vineyard, and does not eat of the fruit? or who feeds a flock, and eats not of the milk of the flock?
2 Corinthians 10:4
our military arms are not so defective, but divinely effectual to demolish all their ramparts;
1 Timothy 1:18
This charge, my son Timothy, I recommend to you, agreeably to the prophetic gifts heretofore conferr'd on you, by virtue of which you might carry on a successful warfare,
1 Timothy 6:12
exert yourself in the glorious cause of faith, and secure the prize of eternal life, to which you were called, when you made that excellent profession of faith before so many witnesses.
2 Timothy 2:3-5
bravely endure hardships, like a soldier of Jesus Christ.