OK, IMO that list is just formulizing what those Scriptures say vs. what some here are trying to make them say.
For clarity, and I think I can say this to you and have it taken seriously, I remain open on this loss-of-salvation view. I'm not fully committed either way and I don't see the argument being resolved by thinking what we've been thinking for millennia now. I've read a lot of exegetical work and maybe some of it is correct, but I'm not fully convinced and remain open to continued exegesis and explanation, both from others and in my own work.
The problem with most of the discussions here are that they are repeating known arguments that disagree with one another as if this will resolve anything, which is why I make many comments about systematic theologies. Being taught how to think about the Text by different factions is not the same as actually studying the Text, which is still going on at many levels no matter what anyone thinks about their pastor or historical scholar or camp namesake.
Re: your above thoughts, which I appreciate BTW, in part because we never know who will say something that is the light-bulb moment for us all:
- I agree with your assessments of the Matt & Mark conditional statements. The Greek structures on conditional clauses are easy to identify from the wording, though they may be a bit difficult to interpret apart from truly understanding the different types of arguments being made.
- Yes, I am working from and still on Heb6 and from Galatians and from other parts of the Text. The hypothetical "unicorn" of this Scripture as you likely know is debated. I'm still open to the debate.
- Rather than the analogies you've put forth, and I'm not good at coming up with them or I would do so, I stick mainly with the analogies in the Text. Your wings analogy goes with your unicorn thinking - if given wings then can't lose the wings or the new creature status. But the agricultural analogy used by the writer says if no productivity, then burned. And the flow of the Text re: repentance has what I see as an informative warning statement in Heb6:3 that God is the one who permits repentance. IMO we take Him too lightly. Some in these discussions are inserting these %'s and dividing lines as if they're a strong argument when actually they can just be fallacious forms of argument. This verse tells me God permits repentance (or not) and He doesn't tell me how He makes the decision.
- I've spoken of this before, but I'll tell you while thinking you'll treat it respectfully. I spent many years in a systematic camp, went to a camp seminary, got ordained as a pastor-teacher in the camp, taught camp doctrine for some time all the while continuing studies using the exegetical tools I'd been trained in. In my own work I was noticing things in the Text that did not seem to agree with the camp. Then part of the camp went through a split and I knew had been taught by some who split. The split in part was about the Gospel for goodness sakes - the Gospel! I'd been taught by men who were now disagreeing about the Gospel. So, I redeemed a few years, full-time, doing exegetical studies about the Gospel, about "faith", about "salvation" - just me, the Word, the Spirit, God. I was also continuing to teach at the time and my deal with the home church was that I'd teach what I what I was learning. The conclusion was that much of the camp that split, though scholars, did not fully understand either faith or salvation, and that much of the camp had become so focused on the 1Cor15 'gospel' that they were really not teaching who 'the Christ" is - they'd in large part skipped over the foundation.
So, I'll leave you with that as part of the picture. I've thought for some time that part of these disagreements are based in knowing or unknowing differences about faith and salvation. IMO way too much emphasis is placed on a dumbed-down view of faith - what's the minimum we need to know or do - and on initially being saved. But the Text progressively builds a picture of faith that is not simplistic and the Text when speaking of salvation actually spends very little time looking at the beginning and much time looking through and past the beginning and into a process that has a completion.
IOW, when we're looking at things like Hebrews, we may not be looking at the right things.