You got a good point there Yet,and worthy to be observed,because a lot of people go to Church,and believe it is the true Church of Jesus,and go by whatever the preacher tells them,but do not find out for themselves what the Bible says in regard to truth,or do not study it enough,and you will find that a lot will go by what the preacher says as an intepretation,but when you can prove through scriptures beyond a shadow of a doubt that what they believe cannot be correct,they still hold unto that interpretation of the preacher.
Of these things put them in remembrance, charging them before the Lord that they strive not about words to no profit, but to the subverting of the hearers. Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth.
But shun profane and vain babblings: for they will increase unto more ungodliness(2 Timothy 2:14-16).
God said to study the word,rightly dividing the word of truth,so everybdy has to study the Bible not only the preacher,but of course observation of the different denominations and their different interpretations testifies that we should study the Bible for ourself,for how can we trust them when they cannot all agree on different subjects of the Bible.
One says,there is a resurrection,another there is not.One says there is a millennial reign of Christ,one says there is not.One says the resurrection is pre-trib,another says it is not.
So it is obvious that we have to read the Bible for ourself,and I do not believe all people who claim to be a preacher were actually called to be a preacher.
These were more noble than those in Thessalonica, in that they received the word with all readiness of mind, and searched the scriptures daily, whether those things were so(Acts 17:11).
God said hear what they have to say if they are saying they are relating the word of God to you,but then read the scriptures daily to see if what they said is the truth,and if you do so you are more noble than people who do not check it out.
Of course a lot of this will apply to people that have no or little knowledge of the word,for if you know the Bible well,you can the majority of the time know that they are wrong,for you can put together scriptures in your mind to refute them if they are wrong.