"John 14:6 states: "I am the way and the truth and the life. No one comes to the Father except through Me." Is it undebatable here that Jesus is the only way to Heaven. However, is it inevitable that unbelievers will end up in Hell? Is it illogical to believe that God gives out second chances? I understand that God is just, but God is also loving, and it is difficult to believe that He would be willing to forsake us to eternal punishment. For example, to redeem us and keep us out of Hell He sacrificed His own son. Keeping in line with both His just and loving nature. Is it illogical to believe that God has a "get out of jail" card for all of us, that even when the most adamant of unbelievers die, Jesus will have a way of redeeming them (possibly by speaking with them like the man in the Relient K song "Deathbed")? Obviously this is not an excuse to sin, but rather a spark of hope for those who don't believe."
“There are only two kinds of people – those who say ‘Thy will be done’ to God or those to whom God in the end says, ‘Thy will be done.’ All that are in Hell choose it.”
C.S. Lewis
The central question here seems to be "Does God give out second chances?" Let us examine two verses in the Bible to shed some light on this issue:
The Lord is not slow to fulfill his promise as some count slowness, but is patient toward you, not wishing that any should perish, but that all should reach repentance (2 Peter 3:9)
From Hebrews 9:27, we learn that people are destined to die only once and to then face judgment. From 2 Peter, we learn that God is gracious, patient, loving and does everything he can to give people a chance. There is no such thing as a premature death in which a person will say, "If you just gave me more time, I would have made another decision." Dr. J. Moreland once said:
God is fair. He isn't trying to make it difficult for people. I believe it's certainly possible that those who respond to the light from nature that they hav receive will either have the message of the gospel sent to them or else it may be that God will judge them based on his knowledge of what they would have done had they had a chance to hear the gospel.
Moreland goes on to state that even if Jesus would give them a second chance while they are in hell (separation from God), they probably wouldn't want to be with God in the end, because they are so used to living without him. He says:
People who would 'choose' in a second chance would not really be choosing God, his kingdom or his ways - nor would they be suited for life in his kingdom. They'd be making a prudent 'choice' to avoid judgment only...God maintains a delicate balance between keeping his existence sufficiently evident so people will know he's there and yet hiding his presence enough so that people who want to choose to ignore him can do it.
The song you mentioned, "Deathbed," (see video below) has an interesting line near the end:
And I've given up hope on the days I have left
But I cling to the hope of my life in the next
The point here is that this man is still alive. He has the opportunity, a second chance to make the most important decision that he will ever make - even on his deathbed, he still has the chance to be saved by Jesus.
