Some Christians belief that there is only one way to God and that is through Jesus.
This could mean only Christians make it to heaven and people of all other faiths are destined for hell.
One of the most commonly quoted passages from the bible to justify this view is: John 14:6
"Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me."
What's the best way of looking at this passage?
Is their reasonable justification for Christians' claims that only their faith can save? Is there a better way of understanding salvation?
There's a simple way to look at it:
There's only one creator, ruler, and lord over the universe. That is Jesus, as the visible image of the Father.
You have to submit to the Lordship of Jesus to abide with Him.
Given that there is only one Lord over all: If you choose not to accept the Lordship of Jesus and abide with Him, then where else do you have to go?
The only alternative is you end up separated from God, the source of life, and all the consequences entailed in that.
So, even if you were to argue about the hows and whys of salvation, ultimately you still come down a simple conclusion that cannot be escaped: Rebels against God (ie. sinners) won't be in the presence of God, and there's only one God, so if you reject Him then you're out of options. There is no plan B for people who choose to reject Jesus, considering He is the creator, source of eternal life, and Lord of all. Salvation is essentially restoring relationship with God, and with that comes eternal life, but if people reject relationship with God then they cannot be saved because it is that relationship with God itself that brings salvation from the original separation which doomed them to death. It is only through Jesus that that relationship can be bridged again.