As the Bible is the Christian Holy Book, correctly believed to have been inspired by God Himself, those who claim to be Christians are strongly motivated to at least appear to be committed to it. There is a problem, however. Mankind has invented hundreds, even thousands of alien doctrines, from single doctrines such as Arianism, to whole denominations, such as Mormonism, which are obviously very contrary to Scripture.
Or are they? Though challenging these false doctrines is usually as easy as opening the Bible to the right page, modern heretics have a sneaky dagger hidden in their cloaks. Rather than acknowledge that their opinions are contrary to Scripture, they claim their opinions are only contrary to "your interpretation" of Scripture.
In our Relativistic culture, the Bible is seen as being ambiguous, open to a wide range of equally valid interpretations. It can be made to say whatever the reader wants it to say, and that interpretation is said to be as valid as any other interpretation. It is seen as rude, or even hateful and intolerant, to openly oppose someone else's interpretation of Scripture (though apparently not so rude for them to challenge yours).
This state of affairs is, quite frankly, rather embarrassing. See, every written work is open to interpretation. It's called "reading". You don't get to just interpret it like some kind of ink blot test, because the ink takes the form of letters, which are arranged into words, which are arranged into sentences. Coherent sentences. Many coherent sentences. Each word, each sentence, nest in clusters of context clues, which gradually eliminate certain interpretations as valid. Eventually, we are left with very few valid interpretations, usually only one. I've never in my life come across a Bible verse or passage with more than 4 probable interpretations, and the more important the verse, the fewer interpretations are left open to honest students of Scripture.
And everyone knows it.
See, those who hide behind the multitude of interpretations excuse usually do so not because they believe multiple interpretations are valid, but because they know their one interpretation is not. Yet, they take that one interpretation very seriously. Just as the Jews in Jesus' day.
During His ministry, two groups of Jews, the Pharisees and Sadducees, were particularly combative towards Jesus. Both groups had their own interpretations of Scripture, including regarding the Messiah. And they took these very seriously. So seriously, in fact, that they not only constantly locked swords with Jesus, but eventually hung Him on a cross.
Just as the Jews took their interpretations of Scripture seriously, Jesus also took His interpretation seriously. Every time the Jews would confront Him, He would confound them. He constantly mocked their apparent illiteracy, asking them "have you not read..." before citing Scripture, and He would rebuke them very sternly for failing to heed the word of God to which they claimed allegiance.
From this, we learn what we already knew: Scripture is not open for just any old interpretation. You can be so very wrong that you would crucify the one and only Son of God, or so right that those who are wrong would gladly crucify you with Him. But realistically, the middle ground is as slim as a picket fence.
Ultimately, those who cling to the multiple interpretations defence don't really mean it. The very fact that they cling to their own interpretation, however sincere they may be, shows that they at least subconsciously know the Bible is not open for interpretation. But this leads to the frightening possibility that they might be wr... wrrrrr... wroooo... wrong!
On the other hand, those who believe the Bible is not open to interpretation, while we must acknowledge that we could also interpret it wrong (after all, we are fallible sinners), are far more rational people, and are far more likely to be correct. Furthermore, we are forced to justify our views. We can't just say "that's just your interpretation" and be done with it. No, we have to explain why our interpretations are right, and why others are wrong.
In the end, those who are serious about their faith will study the Scriptures, and as a result, will ascertain their intended interpretations. This will make us unpopular with the rest of the world, whether they go to the extreme of persecuting us or not. Those who use "that's just your interpretation" as an excuse for poor doctrine, by contrast, will likely share in the fate of the impenitent Pharisees. Their interpretations of Scripture are as futile as the opinions they held before they read their first verse. As God tells us through Paul, "All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness: That the man of God may be perfect, thoroughly furnished unto all good works." Those who fail, and especially those who refuse to use it for these purposes are probably not among God's children, for as the Lord again tells us, this time through His servant, John, "...he that knoweth God heareth us; he that is not of God heareth not us." (1 John 4:6a).
If you truly know God, prove it. Take Paul's command to heart: "Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth." (2 Timothy 2:15). There is a right and a wrong way to interpret Scripture, and no, it is not rude to challenge those whose interpretations deviate from its plain teachings. If you are literate, and have access to a Bible in your language, you have no excuse for going astray, for God Himself is leading you. But not by the nose. You must follow Him as willingly as you previously went your own way. Make the wise choice. Delight in His word.