We all think the Bible is plain, straight forward
It's interesting that you say that. I had "people" from another forum go after me because I stated how confusing some of Paul's writings can be. Even Peter himself stated such.
2 Peter 3:15-16 NET - "And regard the patience of our Lord as salvation, just as also our dear brother Paul wrote to you, according to the wisdom given to him, 16 speaking of these things in all his letters. Some things in these letters are hard to understand, things the ignorant and unstable twist to their own destruction, as they also do to the rest of the scriptures."
The Holy Spirit teaches the Truth . . . so those who are being taught by the same Spirit are receiving the same Truth. So what does this mean, then, considering the plethora of "teachers" we have here?
Pretty simple . . . the Remnant is small, and so are the number of True teachers . . . here.