'Sword' in the Bible

Who will separate us from the love of Christ? [Will] affliction or distress or persecution or hunger or lack of sufficient clothing or danger or the sword?

for it is God's servant to you for what [is] good. But if you do what [is] bad, be afraid, because it does not bear the sword to no purpose. For it is God's servant, the one who avenges for punishment on the one who does [what is] bad.