https://en.wikipedia.org/wiki/Thou_shalt_not_kill The New Testament acknowledges the just and proper role of civil government in maintaining justice[45] and punishing evildoers, even to the point of "bearing the sword."[46] One criminal on the cross contrasts his death as due punishment with Jesus’ death as an innocent man.[47] When Jesus appeared before Pilate, both Pilate[48] and the crowd[49] recognize the principles of bloodguilt. There is no indication in the New Testament that it is unjust, immoral, or inappropriate for secular civil governments to execute those guilty of shedding innocent blood.[50]
Like the Old Testament, the New Testament seems to depict the lawful use of force by soldiers in legitimate battles as justified.[51] The profession of soldier is used as a metaphor by Paul exhorting the Ephesians to "put on the full armor of God."[52] Cornelius, the Roman centurion, is portrayed as a righteous and God-fearing man.[53] Jesus praises the faith of a Roman centurion on the occasion of healing the centurion’s servant, and states that he has not found such great faith even in Israel.[54] When John the Baptist was preaching repentance and baptizing penitent sinners in the Jordan river, soldiers came to John and asked for specific instructions regarding their repentance. John the Baptist did not demand that the soldiers renounce their profession, instead he exhorted them to be content with their pay.[55]
https://acton.org/research/history-freedom-christianity That great political idea, sanctifying freedom and consecrating it to God, teaching men to treasure the liberties of others as their own, and to defend them for the love of justice and charity, more than as a claim of right, has been the soul of what is great and good in the progress of the last two hundred years. The cause of religion, even under the unregenerate influence of worldly passion, had as much to do as any clear notions of policy in making this country the foremost of the free. It had been the deepest current in the movement of 1641, and it remained the strongest motive that survived the reaction of 1660.