From the Holy Gospel according to St. John, 1:Well, yes and no. There is no consensus amongst christian churches. Some are adamant in taking the putative statement of Jesus on the matter as literal:
John 14.6 KJV " Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.”
JW's believe that only 144.000 will be saved.
----and of course, every christian sect claims all the others are simply wrong and probably damned..
Some more progressive Catholic figures have stated, only a few year sago, that an atheist can go to heaven, as long as he/she is a good person who lives a moral/ethical life
Yep, used to confuse the frack out of me. I finally said "Stuff it! A plague on all your houses!" (a misquote of Shakespeare)
From the Holy Gospel according to St. John, 3:12 But to all who did receive Him, who believed in His name, He gave the power to become children of God, 13 who were born, not of blood nor of the will of the flesh nor of the will of man, but of God.
From St. John Chrysostom's Homily 25 on the Holy Gospel according to St. John:3 Jesus answered him, "Truly, truly, I say to you, unless one is born again/from above he cannot see the kingdom of God.” 4 Nicodemus said to him, “How can a man be born when he is old? Can he enter a second time into his mother's womb and be born?" 5 Jesus answered, "Truly, truly, I say to you, unless one is born of water and the Spirit, he cannot enter the kingdom of God. 6 That which is born of the flesh is flesh, and that which is born of the Spirit is spirit. 7 Do not marvel that I said to you, 'You must be born again/from above.' 8 The wind blows where it wishes, and you hear its sound, but you do not know where it comes from or where it goes. So it is with everyone who is born of the Spirit."[...] 16 "For God so loved the world, that He gave His Only Son, that whoever believes in Him should not perish but have eternal life. 17 For God did not send His Son into the world to condemn the world, but in order that the world might be saved through Him. 18 Whoever believes in Him is not condemned, but whoever does not believe is condemned already, because he has not believed in the name of the Only Son of God.
[...]Let us now attend to the sequel of what has been before said. When Nicodemus fell into error and wrested the words of Christ to the earthly birth, and said that it was not possible for an old man to be born again, observe how Christ in answer more clearly reveals the manner of the Birth, which even thus had difficulty for the carnal enquirer, yet still was able to raise the hearer from his low opinion of it. What says He? Verily I say unto you, Unless a man be born of water and of the Spirit, he cannot enter into the Kingdom of God. What He declares is this: You say that it is impossible, I say that it is so absolutely possible as to be necessary, and that it is not even possible otherwise to be saved. For necessary things God has made exceedingly easy also. The earthly birth which is according to the flesh, is of the dust, and therefore heaven is walled against it, for what has earth in common with heaven? But that other, which is of the Spirit easily unfolds to us the arches above. Hear, you as many as are unilluminated, shudder, groan, fearful is the threat, fearful the sentence. It is not (possible), He says, for one not born of water and the Spirit to enter into the Kingdom of heaven; because he wears the raiment of death, of cursing, of perdition, he has not yet received his Lord's token, he is a stranger and an alien, he has not the royal watchword. Except, He says, a man be born of water and of the Spirit he cannot enter into the Kingdom of heaven.
Yet even thus Nicodemus did not understand. Nothing is worse than to commit spiritual things to argument; it was this that would not allow him to suppose anything sublime and great. This is why we are called faithful, that having left the weakness of human reasonings below, we may ascend to the height of faith, and commit most of our blessings to her teaching; and if Nicodemus had done this, the thing would not have been thought by him impossible. What then does Christ? To lead him away from his groveling imagination, and to show that He speaks not of the earthly birth, He says, Unless a man be born of water and of the Spirit he cannot enter into the Kingdom of heaven. This He spoke, willing to draw him to the faith by the terror of the threat, and to persuade him not to deem the thing impossible, and taking pains to move him from his imagination as to the carnal birth. I mean, says He, another Birth, O Nicodemus. Why do you draw down the saying to earth? Why do you subject the matter to the necessity of nature? This Birth is too high for such pangs as these; it has nothing in common with you; it is indeed called 'birth,' but in name only has it anything in common, in reality it is different. Remove yourself from that which is common and familiar; a different kind of childbirth bring I into the world; in another manner will I have men to be generated: I have come to bring a new manner of Creation. I formed (man) of earth and water; but that which was formed was unprofitable, the vessel was wrenched awry; I will no more form them of earth and water, but 'of water' and 'of the Spirit.'