> I assume there are varying levels of intensity and duration regarding each sinner's spiritual separation.
This is correct, as far as we can tell from the Bible. There are degrees of intensity and duration of punishment in hell, and there are degrees of reward in heaven.
> Hence, how could Jesus logically bear the spiritual penalty of all mankind when each person deserves a different penalty, unless He literally endured the individual penalty of each and every saved sinner once at a time while He was in Hell?
It's not purely a logical scenario, but more a legal and theological reality. When we look at what the Bible teaches about atonement, there is no single analogy or explanation that adequately and fully covers what is happening there. Atonement is a ransom, a debt-repayment, a propitiation, a substitution, and more. So when I use an analogy of a sacrifice, or a debtor, or whatever, they are all inadequate in themselves to cover the full gamut of what atonement truly is. It's a complex and multi-faceted event. Jesus doesn't have to literally endured the individual penalty of each, just as he didn't have to suffer the exact suffering of each human to represent their suffering (he never experiences labor and delivery, for instance, or the death of a baby he delivered), or didn't have to die every possible death to have experienced death for us (he never died from cancer). What he did fulfilled legal and theological requirements, according to the Bible, and therefore "counts" as bearing the penalty for humankind.
> Even as you approve the transaction of money in an escrow account, there's always a physical process by which the money reaches its recipient.
You're right that every analogy falls short in some way and has loopholes in its attempt to explain the original. We can only take the analogies as analogies to help us understand, not as models to offer a full explanation.
> Would you care to describe how accepting Christ's sacrifice leads to salvation?
What the Bible says is that we all deserve death, which is the "salary" for our sin. It's the natural and necessary result of what we have done. Jesus died in our place (substitutionary atonement)—a widespread conceptual practice in the ancient world: all kinds of things could substitute for a wide range of other things, depending on the exact issue (blood sacrifice, grain sacrifice, incense, scapegoat, etc.). Jesus took our sins upon himself, died in our place, broke the power of sin and death by rising from the dead, and offers to us the free gift of eternal life because he has done it all. Our position is then to accept or reject the offer. The decision is ours. He has paved the way for the salvation of all: paid the debt, so to speak. If we accept the gift, we can appropriate the benefits by faith. If we refuse the gift, the inevitable and necessary consequence is continued separation from God.
> As a side note, I've discovered an online document here (
https://lawreview.law.ucdavis.edu/issues/46/4/Articles/46-4_Ryan.pdf) which reconciles capital punishment with rehabilitation
Thanks for the reference. I'll check it out.