[Re: a poster's questions: "But what if they don't hear it [the Gospel]? Or hear it but don't recognize it? Is it right for them to be sent to hell because their ears aren't as well-tuned?]

Making this statement shows that in your mind you question the fact that none will be left without the 'witness' of the Word. You are assuming that a righteous, just, merciful, compassionate Father will allow ones to perish in sin without the opportunity to accept the Gospel of Christ. You should go back and rethink your ideas in the Light of the Word.
Your statement;['Is it right for them to be sent to hell because their ears aren't as well-tuned?']proves that your confidence and faith in Father is lacking in some points and that you are letting the 'worldview' creep into your thoughts. These thoughts should be brought captive under the Mind of Christ, and cast out and considered no more.
Effectively, your statement 'judges' God by questioning whether His decisions would be 'wrong or right', and puts yourself in danger of hellfire.
Please repent from this and correct this problem in your life, before it costs you a great price, for God will not be mocked.
Maranatha