Is Jesus really the only way to heaven as the bible implies in John 14:6. Didn't God send us other peaceful prophets as well (e.g. in eastern religions)?
If Jesus were only a “peaceful prophet” (and some would argue the “peaceful” part of that description, claiming that he was a revolutionary prophet) then it might be that there would be other ways to heaven. The reason, however, that he is the way to heaven has nothing to do with his words, but rather with who he was and what he did.
John the Baptizer summarized the difference between Jesus and other prophets, saying, “Behold the Lamb of God, which taketh away the sin of the world.” (John 1:29) Jesus came not as a prophet, but as the perfect sacrifice for sin.
For when we were yet without strength, in due time Christ died for the ungodly. … Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned:… Therefore as by the offence of one judgment came upon all men to condemnation; even so by the righteousness of one the free gift came upon all men unto justification of life. (Romans 5:6, 12, 18)
But Christ being come an high priest of good things to come, by a greater and more perfect tabernacle, not made with hands, that is to say, not of this building; Neither by the blood of goats and calves, but by his own blood he entered in once into the holy place, having obtained eternal redemption for us. … For Christ is not entered into the holy places made with hands, which are the figures of the true; but into heaven itself, now to appear in the presence of God for us: Nor yet that he should offer himself often, as the high priest entereth into the holy place every year with blood of others; For then must he often have suffered since the foundation of the world: but now once in the end of the world hath he appeared to put away sin by the sacrifice of himself. And as it is appointed unto men once to die, but after this the judgment: So Christ was once offered to bear the sins of many; and unto them that look for him shall he appear the second time without sin unto salvation. (Heb 9:11-12, 24-28)
Paul told the Romans that the gospel (good news) of Jesus was the resurrection (Romans 1:4). He told the Corinthians that it was the death, burial, resurrection, and post-resurrection appearances of Jesus (1 Corinthians 15:1-8). The difference between Jesus and other prophets is that Jesus died to bring about forgiveness of sins to those who will follow him, and that he rose from the dead to show himself to be the Son of God and to give hope to his followers.
Another. Less important difference, is that most of the “peaceful prophets” of the eastern religions either do not claim to be prophets of God or they claim to be prophets of a multitude of gods. Islam is, of course, an exception, as Mohammed claimed to be a prophet of one god, just not of the God known by the Jews and Christians.