Although there are mysteries in the Bible, it is not “mystical”.
What God chooses to reveal there – including Himself – is accessible to all who simply repent, embrace His forgiveness, submit to the authority of His word and relate together in healthy local fellowships.
The mystical fringe, however, is driven by their own angst, anxiety and insecurities …
To go “deeper” or “beyond” the simple truths of Scripture by dismissing elementary repentance, basic forgiveness, Biblical authority and functional churches.
Which is why they never seem to find the authentic Christ of Scripture.