Luke 22:36 Then said he unto them, But now, he that hath a purse, let him take it, and likewise his scrip: and he that hath no sword, let him sell his garment, and buy one.
Those were probably for cutting their meat at the dinner table?
I'm not making a pacifist argument here. I am not a pacifist and I do not defend that position. I'm just saying historically, Christians in the pre-Constantine centuries didn't defend their families and congregations with force of arms. If you think that's disturbing, you're surely not the only one.
The passage you cite certainly is not about armed defense. They said "Here are two swords" and He said "Enough!"