In the post preceding this one, I referenced Paul's sermon to the Athenians at the Areopagus. In that sermon, Paul mentioned that he had observed an altar dedicated "To the Unknown God." (Acts 17:23) He told his audience that they had been worshiping this God in ignorance. (same verse) He then proceeded to tell them that this God doesn't live in manmade temples and is the author of all of the life on this planet. (verses 24-25) Continuing, we read: "And
Paul wrote to the saints at Rome about Gentiles who had never heard about YHWH: "that which may be known of God is manifest in them, for God hath shewed it unto them. For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse..." (Romans 1:19-20) A little later in the same letter, he wrote: "For when the Gentiles, which have not the law, do by nature the things contained in the law, these having not the law, are a law unto themselves: Which shew the work of the law written in their hearts, their conscience also bearing witness, and their thoughts the mean while accusing or else excusing one another..." (Romans 2:14-15) In both of these passages, Paul is clearly talking about Gentiles who were not Jews or Christians, and who had never been exposed to the Torah!
In the Gospel According to John, we read that Jesus Christ said that God was the source of the impulse that motivated people to come to him. (John 6:44) In other words, the Christian calling is of Divine origin - It does not depend on any human (apostle, prophet, priest, pastor, minister or elder). You don't need a sermon, magazine, book, booklet or Bible study to draw you to Christ. In that same Gospel (John), we read that Jesus later proclaimed that "if I be lifted up from the earth, [I] will draw all men unto me." (John 12:32) Indeed, one only has to consider how Paul was converted to Christianity on the road to Damascus to see the absolute truth of this principle (that human intermediaries are not essential to the process). (Acts 9:1-6)
Is it possible to find God without human assistance? I think that we just demonstrated from Scripture that other humans (or their writings) are not necessary to find God.