Therein lies the problem. Various translations of the Bible are either based on one particular denomination's interpretation of the Bible (ex. NWT - Jehovah's Witnesses) and what they want it to say, or it is based on what a particular publishing house pushes within its translation team (Zondervan for example). Since most people are not going to learn ancient Hebrew and Koine Greek in order to read the oldest manuscripts available, most are left with relying on translation X and the bias that comes with it.
To compound the issue, many pastors will teach from tradition rather than from the Bible. So many of them do not have a formal education from seminary, and they do not get instruction in critical classes such as hermeneutics, apologetics, or exegesis. The obvious problem is that if their mentor was wrong and they repeat what they were taught, they too are wrong.
Then comes the crucible to the Abrahamic religions, especially Judaism and Christianity. The original works, called the Autographs, have long been lost/destroyed for thousands of years. Most went up in flames when Nebuchadnezzar II destroyed much of Jerusalem during his reign over the Persian Empire. We have no way of knowing what those original works actually said. All we have are copies of copies. Anyone or any organization that says "the Bible is the inerrant word of God" is making an assumption that they simply can't prove. We know for a fact that everyone makes mistakes, so biblical translators and copiers are not exempt.
So, what do I consider authoritative? When it comes to interpreting the OT (Tanach), I leave it up to Hebrew scholars such as Jewish rabbis. When it comes to the NT, that is a different conundrum altogether. I use several different translations of the Greek, or I study the Greek myself (a long, slow process usually reserved for specific words or phrases, such as
ouranós). When a common theme presents itself and can be rationalized with logic, I give it credit and consider it fairly authoritative. If it is far fetched and borders on a fairy tale or the supernatural, I usually consider it to be metaphorical or allegorical.
There is a reason that I entered seminary as a Baptist and ~8 years later left as a deist...albeit with a Th.D.