I believe there is a major subtle confusion going on, from Screwtape's last response. I thought of it a few hours after I posted my last response.
SK's theology is that God chooses you. This means that God could sit around in our sky all day, saying: "I'm God, foolish mortals: Bwahahaha. See if you can hit me with missiles! See if you can fathom my next super trick. See if you can heal this donkey!" God could give us ample proof of his existence, and then say: "I choose who goes to heaven of Hell, and there is nothing you can do about it. Also, I'm not going to indicate who I have chosen."
Christians have dealt with their bizarre faith idea by confusing evidence of God, with being chosen. So, typically, if God gives them any sign at all, they are so desperate to believe, that they interpret the sign as them being chosen, because obviously God wouldn't give a sign to someone unchosen.
The apparent converse of this, is that God would never reveal anything of significance to anyone unchosen, except for a range of incorrect contradictory things, such as the Bible, Quran, Bhagavad Ghita. He would do miracles, but they would be unvconvincing, and only good enough to fool someone into belief, or convince people who already believe. He would send us false proofs, such as DNA information, universal existence, prophecy that never works, messiahs that you can't find, and sensational Fox News stories.
Rule (1) God only reveals himself to the chosen.
Rule (2) God never reveals himself to the unchosen, except by false miracles and misinformation, such as the Bible.
Rule (3) You can never actually tell if you've been chosen or not.
The only problem with this Christian bullshit, is it goes against (1) Judaism, (2) their own way of thinking.
In Judaism, God loves Jews (who live in Israel; his chosen people), and if you adhere to God's laws, he loves you more. However, the lie of the Christian approach is that they are in such a desperate struggle to prove God exists, even though God deliberately hides. (And, as many people have already pointed out, in this thread, why does SK bother to tell us, if we have no choice in the matter?)
The only conclusion I can come to is that: Christians think that they can bullshit you into believing God, so that God will then bless you.
If that's the case, then why don't they state that clearly in the Bible? The answer is that: if the Bible told us the truth, about it all being a lie, then it would be telling us the truth. You have to respect the consistency, there.