1 Corinthians 9:7
What man ever serves as a soldier, at his own expense? Who plants a vineyard, and eats not of its fruit? Or who tends a flock, and eats not of the milk of the flock?
2 Corinthians 10:4
(for the weapons of our warfare are not carnal, but mighty, through God, for the overthrowing of strongholds,)
1 Timothy 1:18
This charge I commit to you, son Timothy, in accordance with the preceding prophecies concerning you, that by them you may war the good warfare,
1 Timothy 6:12
Fight the good fight of the faith; lay hold on eternal life, to which you have been called, and for which you confessed the good confession before many witnesses.
2 Timothy 2:3-5
Do you, there fore, suffer evil, as a good soldier of Jesus Christ.