Hey, but you all just go on ahead and rely on word of mouth and add ons to Scripture, just like the Pharisees did.
But it’s worth reading how it turned out for them and what Jesus had to say about it.
The funny part of about what you wrote above is that the Protestant churches tend to be the strictest and most Pharisaical in their interpretations of scripture, and yet they all disagree! The reason for this is that guidance is needed to properly interpret Scripture (see Acts 8:31 and Heb 5:12) and they base their interpretations on their own peculiar oral traditions unmoored from anything but their own whims.
But it’s worth reading how it turned out for them and what Jesus had to say about it.
And Jesus's words were passed down verbally until they were eventually written down, sometimes by people who never met Him. Jesus didn't write a book like Mohammad or Joseph Smith did. Jesus left us with a Church which assembled, approved, and preserved the Scriptures you hold so dear. The fact is that your denomination, whatever it is, chose to leave this Church and take nothing but the book and their own unique interpretations of it. Not everything was written down in the Bible (John 21:25) and so an underlying assumption of your beliefs is faulty and this will unfortunately but inevitably lead to other errors in how your denomination's oral tradition interprets Scripture.