Meanwhile, good article find from Bert Gary, Carol! He actually pulls things together a little more than I do! (I’ve heard about the sea of crystal being the basin of washing, and of the basin of washing being the sea of glass mixed with fire, and obviously I’ve connected the latter with the lake of fire; but I hadn’t made the full connections yet.)
One thing I would add (that I pointed out elsewhere on the forum analyzing the connections) is that in the Greek of Rev 15, the people standing on the lake have come out from the beast and out from the number of his name and out from his image (i.e. from idolatry to him), having become conquerors: just as Christ had earlier exhorted sinning church members (in the opening epistles) to stop it and become conquerors instead.
I thought it was interesting that he quoted Peter Kreeft, who’s a Roman Catholic apologist. I somewhat doubt the RCC would put things quite the same way he does, concerning hell! (Purgatory, yes; hell per se, no.)