"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" (Luke 22:36 AV).
That's Jesus' command, and should not have been omitted from your list; all the major commentators say so. It is worthwhile to examine the context and study this situation out.
If the South Carolina church members had been obeying this command, their meeting would not have been a gun-free zone and doubtless the shooter would not have gotten his way with them. Peter and another, even at the Last Supper/First Communion had their sidearms with them, and Jesus told them all to get one.
Today that would be equivalent to being armed with a personal weapon, even in church, not excluding even in the communion service.
I think you’re right.
I know men at my church who come to church carrying.
And I’d trust them with my life. They’re honorable men with integrity who would lay down their lives to protect others should a shooter come in.