Adriane,
Thanks for your response - I do appreciate it.
As I said above, brookter, “ceperint” is future perfect here, not past perfect subjunctive. There is no reason for it to be past perfect subjunctive, but there is a reason for it to be future perfect (completed in the future at the time to which “peribunt” refers). [Only ancient grammarians such as Priscian or Probus etc refer to the future perfect as subjunctive; we today say indicative for the future perfect.]
I confess I’m getting confused again. I certainly hadn’t picked up that you’d ruled out the perfect subjunctive, only that you maintained there was a discernible difference between the two.
My fault, I’m sure, as is no doubt the fact that I don’t understand why you’re saying there is no reason for it to be future perfect. I thought that the perfect subjunctive is used in a subordinate subjunctive clause when the main clause is present or future to represent completed action relative to the main verb.
“All those who may have already picked up the sword will die by the sword” does not appear to me to be an impossible sentence (in English, I mean - whether it is valid in Latin is the reason I posted in the first place!)
I’m not saying that this is the more likely explanation - from your response, it clearly isn’t - but you appear to be ruling it out as valid Latin and I’m not sure I understand why.
Regards
David