"...But now, he who has a purse, let him take it, and likewise a sack; and he who has no sword, let him sell his garment and buy one" (Luke 22:36)
Consider that the sword was the finest offensive weapon available to an individual -- the equivalent then of a military rifle today. 1Timothy 5:8 commands us to protect ourselves and our families; Those who refuse have denied the faith and are worse than a nonbeliever.
"What country can preserve it's liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance? Let them take arms. ...The tree of liberty must be refreshed from time to time with the blood of patriots & tyrants. It is it's natural manure." - Thomas Jefferson