Again, I strongly agree that the Scriptures you provide here do say that Jesus is the only way for salvation. There is no other, as it says under heaven whereby we must be saved.
And for those who believe, Jesus saves because they believe.
Praise be to God, that we know Him as our Lord and Savior.
However, how can one believe what one has never been told about?
God has written His law into the hearts of all men and desires that all men be saved. Would that we could reach everyone with that message.
But that is not the case. There are those who never hear it or never heard it. Are they therefore condemned without ever knowing Jesus?
I don’t believe so. I believe that all people have desired and searched for God. How could it be otherwise. He is the creator of all. How could anything in His creation not feel His pull?
Jesus is the way and the Scripture you gave makes that clear, but it doesn’t say ONLY those who believe will be saved. It says that if you believe you will be saved.
Read John 3:18
Yes, yes, it DOES say ONLY those who believe in Christ will be saved. Indeed, as Romans 1:20 says, " For since the creation of the world God’s invisible qualities—his eternal power and divine nature—have been clearly seen, being understood from what has been made, so that people are without excuse.". ALL have a God-shaped vacuum in their souls (as one man put it) that can only be filled by the person of Jesus Christ. There are many Scripture passages that speak of Jesus Christ being the ONLY way to salvation. Before Christ was incarnated, believers looked FORWARD to the time when the Messiah would come and take away sins forever. Today, we look BACK to Jesus Christ, the fulfillment of the Messianic prophecies.
You ask a very good question that many people have wondered over the centuries, how can God condemn a person who has never heard of the Savior? The answer, I believe, is similar to the one often cited here - NOTHING is impossible with God. He promises that He is a rewarder of those who diligently seek Him and He WILL be found when we search for Him with all our hearts. There is only ONE way to God - through Christ. It isn't being a "good" person, because ALL have sinned and sin demands payment. It isn't doing the "best" one can, because all our righteousnesses are as filthy rags in God's sight if they are done to try to redeem ourselves.
My God is a Mighty God and NOTHING is too hard for Him. If someone want to know the truth, God will get it to them. It may not be even a person who tells them - Scripture is replete with souls who have come to know the truth in miraculous ways. God's will is that all be saved and come to the knowledge of the truth. Do we think God is incapable of bringing the truth to the one who is sincerely seeking it?