Sometimes a problem has many solutions. While I enjoy “lateral thinking” exercises, I am always frustrated because I can come up with a solution to a problem which “works” in my own mind, but is not the solution the exercises was looking for in the first place.
For example, there are many solutions to the problem of “how to turn on a light switch.” Some are better than others, but in theory they all “work.” I could walk over and flip the switch; I could tell my kid to go flip the switch; I could toss things at the switch until I hit it just right; I could write an App for my iPhone which used the internet to access the power grid to make my light come on; I could shoot at the switch with a pistol, etc. Think about a Rube Goldberg device. These were imaginary devices which tried to solve a problem (light a match, turn on a light) with as many (bizarre) steps as possible. There are actually a lot of options for turning on a light!
Some people have the mistaken impression that religion is the same sort of thing. There are hundreds of religions out there, and they all have advantages and disadvantages, things which attract followers or drive them away. The noble seeker tries out all sorts of religions to see if he can get closer to God, perhaps drawing from a variety of religions to find some sort of spiritual peace. This sort of multi-culturalism is popular in the modern world, few people like to hear that there is only one correct religion. That sort of claim is prejudiced, dangerous, or rude.
Yet that is exactly the claim Jesus makes in John 14. Jesus claims to be the only way to God, he says in these verses that he is the Way, the Truth, and the Life, no one can come to the Father unless they come through him (John 14:6). This is not a random line in the middle of the gospel, this is the theme of the whole of John! Jesus is God, made flesh, the one who reveals the only truth that there is in the world, and the one who provides life (resurrection from the dead and eternal life). If someone wants access to the Real God, he has to come through Jesus. This was the core of the gospel as it was first preached, Acts 4:12 states that clearly that there is no other name under Heaven by which a person can be saved.
As politically incorrect as that is, that is claim Jesus makes and that is the teaching of the whole Bible.