the bible makes some very clear statements which do not need to be interpreted.
I think my list of "clear statements" would be different than yours, and both of ours would be different to, say, 2ndpillar and savagewind. Between the four of us, just using the Bible alone, would there be any way at all to prove which of us four is right? No. It'd just end with each of us saying "I'm right, the rest of you are wrong."
If i make a statement, its a fact.
Overconfident much? :areyoucra
And the bible makes such facts. If someone were to interpret a fact differently to what is stated, they are changing what the bible says.
But how do you know what fact the Bible is stating? Some passages are very unclear. And everyone under the sun seems to have a different idea about which passages are clear and which are unclear. So how can you tell what the Bible is saying using the Bible alone? You can't, it's just one person's personal interpretation vs. another's. This is why there are thousands and thousands of Sola Scripturist denominations; neither side can prove which is right, so they simply split and create new denominations.
For example, looking at an earlier post of yours:
Jesus used hyperbole a lot in his teachings. Can you put a camel through the eye of a needle? Of course not. Would someone literally rip out their eye? Of course not.
hyperbole is a way to make a point stand out, its not a statement of fact.
But this passage looks pretty clear to me. If my eye causes me to sin, I should pluck it out and cast it away. It's better to go into Heaven blind than to be cast into Hell with both my eyes. Jesus commands us to do a lot of things for the sake of the Kingdom of God that seem pretty extreme, like selling everything that we have and following Him. How is plucking my eye out any different? Therefore, Jesus' teaching that I should pluck out my eye and cut off my right hand if they cause me to sin are perfectly clear, and clearly stated as literal truths. Those who interpret them as hyperbole are simply unwilling to take Jesus seriously and go to extremes to follow Him. I will therefore use these verses about plucking out my eye and cutting off my hand to interpret the verses I deem to be unclear.
^Do you see how the process of Sola Scriptura results in so many divergent opinions on how the Bible should be interpreted? It elevates one man's own fallible human reason above what the authors of the Bible actually intended, and what God intends to tell us through those authors.
The Jehovah's Witnesses haven't suffered as much of the division problem, because the Watchtower also publishes what can be considered a "tradition" of how to interpret the Biblical text. All the magazines and papers on doctrine, theology, practice and Biblical interpretation the Watchtower puts out? The fact that the JW's rely on the Watchtower to know how the Bible should be interpreted? That's all proof that the Jehovah's Witnesses, just like the Catholics and the Orthodox, rely on an authority outside the Bible to understand how the Bible should be interpreted, and believe that those who go against this authority are going against the correct interpretation of the Bible.
If the Jehovah's Witnesses really did rely on the Bible alone for their doctrine, then we would have seen the same trend among them as we do among every single other denomination that at least claims to rely on the Bible alone for doctrine--they would be fracturing and splitting seven ways to Sunday. It's just the nature and end result of the Sola Scripturist position.
For example, the bible says of Adam's death; "for dust you are and to dust you will return"
What does a human become after death? According to this verse, dust. But some say they return to 'spirit' which is completely contradictory.
But this view also overlooks the evolution of Biblical thought on the nature of the afterlife. What that means is, in earlier books, the Jehovah's Witnesses position of man only consisting of a physical body is espoused, and that when we die, we're just dead, like what an atheist would say. But in later books, however, the body and soul are shown as being fully distinguished from one another, and Sheol (or Hades in the Greek Septuagint) is shown as not just being where your body gets thrown in, but is instead shown as being a dwelling-place and realm of the dead, whose spirits still exist as shades, and where the spirit does indeed have an existence independent of the body.
Likewise, in earlier parts of the Bible, death is described as being eternal; i.e. there is no resurrection of the dead according to earlier parts of the Bible. This can be contrasted, of course, with later writings such as Hosea and the New Testament.
Further, in the earliest parts of the Bible, henotheism (the teaching that there are many gods, but that only one should be worshipped) is stated as a fact (whence the "god of gods" reference in many of the Psalms of David). Only much later in books such as Isaiah is strict monotheism affirmed (see especially the latter chapters of Isaiah) and the existence of any other "gods" is flat-out denied, instead being called "worthless idols" or "demons".
What the doctrine of Sola Scriptura overlooks is that we need the historical, social and theological context to understand such things about the Bible and how it evolves as God gave more revelation to the people of Israel. Otherwise, you'll start using the wrong passages of the Bible to interpret the rest of it, not understanding the progressive revelation given by God to Israel that makes up the evolution of Biblical ideas. Just knowing the Bible isn't enough. Like any other book with many complex ideas and teachings, we need outside information on its authors, the historical and social context surrounding the time in which it was written, and the ideas and streams of thought common to those eras. Only then will we be able to have a much better understanding of the text beyond the surface level, and once we do that, we may find that our initial interpretations of the text were off-base.
Likewise, interpreting a text using the text itself may lead to some very wrong interpretations. But when we use the extra-text context, then we begin to understand what it actually means. This is why using both the oral and written parts of the Tradition handed down to us by the Apostles, not just the written part (the Bible) but also the oral part (the preaching and teaching of the Apostles, and their teachings to their students which weren't written in the Bible) is so key to having a correct understanding of the Bible, because both the oral and written parts of the Tradition inform one another.