"Happy to discuss how Trinity affects JUSTIFICATION/saved with you AFTER :-"
You're pulling the cart before the Horse.
As for trinity, LOOK at 2 Thes 2:4 -> guess what's in Ya Temple, Lawlessness(Itself)
(And it does NOT say lawlessness "one" that Jesus exposes when he comes in the verses following this, that's a man made deception added in there, to remove the cent from the trail.
