There is not a syllable in the Pauline letters that can be cited in support of Christians employing violence.

Paul’s occasional uses of military imagery (e.g., 2 Cor. 10:3-6, Phil. 1:27-30) actually have the opposite effect: the warfare imagery is drafted into the service of the gospel, rather than the reverse. He appropriates battle imagery as a way of describing the apocalyptic context in which the community lives, but the actual “fighting” is done through the proclamation of the gospel and through obedient yielding of one’s members to God as hopla (“weapons”) of righteousness (Rom. 6:13).

from The Moral Vision of the New Testament