I'm not understanding how this effects my original argument.smiley wrote: However, the issue here is if they can tell that their wrong actions are of infinite gravity and have infinite consequences.
What difference does it really make whether or not they realize the consequences of their wrong actions if they know that they are wrong? A murderer may not know the exact sentence for his crime, but that doesn't change that he knew what he did was wrong. Anyone who knows what they did was wrong can be held accountable. Heck, nobody TRULY understands the consequences of accepting or rejecting God. I know I don't understand it, but I've stilled made my choice.
On my point #2, that first sentence was worded badly. What I should say is that "we" know what the Bible says. Anyone who has debated on any of these topics or has access to the Bible is without any excuse. I can't say exactly what happens to those who might live on an island without any books or knowledge of Jesus (although different theologians have addressed this, and you seem to have done so as well in answering 3), but that really doesn't effect "us". If you're also talking about those who just haven't read the Bible or decided they don't want to bother about that stuff, willful ignorance is simply no excuse and it's a sign that they have rejected God in their own way.
Here's a quote from an article in the Apologetics Study Bible that addresses your question. Before this question it was established refusing to accept Christ is really the "ultimate sin", it's the mindset of rejecting God.
"But how can people be sent to hell without knowing its full implications? Even if one isn't fully aware of hell's anguish, this doesn't mean our choice is too much to bear. God is ready to equip anyone for salvation (John 16:8). Though the full consequences of our embracing or rejecting God aren't apparent to us now, grace to choose responsibly is available to all. What prevents the salvation of everyone? Individuals' choosing freely to reject the Holy Spirit (Ac 7:51). God doesn't send people to hell; they freely reject Him. Condemning themselves by not acknowledging their guilt."
So as that part of the article implies, Jesus is "knocking at the door". Those who seek will find. Seeking Jesus is something that's written into a code, part of our essence, receiving or rejecting Christ is a choice.
As far as what it means to say that God is infinite, here's a link about that-