1 Corinthians 9:7
What soldier ever serves at his own cost? Who plants a vineyard and yet does not eat any of the grapes? Or who tends a herd of cattle and yet does not taste their milk?
2 Corinthians 10:4
The weapons with which we fight are not human weapons, but are mighty for God in overthrowing strong fortresses.
1 Timothy 1:18
This is the charge which I entrust to you, my son Timothy, in accordance with the inspired instructions concerning you which were given me long ago, that being equipped with them as your armour you may be continually fighting the good fight,
1 Timothy 6:12
Exert all your strength in the honourable struggle for the faith; lay hold of the Life of the Ages, to which you were called, when you made your noble profession of faith before many witnesses.
2 Timothy 2:3-5
As a good soldier of Christ Jesus accept your share of suffering.