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1. You are so important because our good Lord created your soul in His image and likeness, IMMORTAL and with FREE WILL. That sounds pretty important to ME. You get to CHOOSE God (or not). WHO would be so foolish as to choose Satan? I shudder in FEAR at the thought!
2. Lol. Having a dull, boring, monotonous life means PEACEFUL. My thrills were left on "Blueberry Hill" after I turned thirty. My life is WONDERFULLY peaceful now and I wouldn't change it for anything.
3. I would like to know it too. Probably, it was a giant denouement: martyrdom. Christianity spread far and wide. St. Thomas went to India and TODAY there are still a plethora of Catholic males in southern India named THOMAS. I worked with a couple in the KSA.
Excellent points all around. Regarding #3, there are some historical/legendary materials - I used to have a book that summarized them, but I gave it to my mother-in-law. However, that’s not the same as having something on the order of Tacitus’s history.