Freemasonry is a secret society.
All secret societies are satanic.
Freemasonry is the most well known secret society.
Freemasonry itself is a satanic organization, even if some of the Freemasons seem otherwise like "good guys."
Here is an overview of Freemasonry:
Spiritual does not equal esoteric
Esoteric definition: intended for or likely to be understood by only a small number of people with a specialized knowledge or interest.
The Bible is written so as to be easily understood by its readers. Sometimes some of the prophetic books are initially confusing, but applying common sense and letting the Bible interpret itself will bring understanding. It’s not written to confuse people, and it’s not written to be only decipherable by clergy.
John saw what he saw because it was revealed to him by God, not because he followed occult traditions of men. Spirits might interact with humans, but it is difficult to ascertain to what extent. And I have no contact with demons because I have the Holy Spirit in me and I, to the best of my ability, eschew sin and follow Christ.
The Bible does contain a lot more than most realize, but that is due to lack of familiarity and diligent study, not due to the Bible having hidden messages or codes. As for each verse being taken many ways:
“We have also a more sure word of prophecy; whereunto ye do well that ye take heed, as unto a light that shineth in a dark place, until the day dawn, and the day star arise in your hearts: knowing this first, that no prophecy of the scripture is of any private interpretation. For the prophecy came not in old time by the will of man: but holy men of God spake as they were moved by the Holy Ghost.” 2 Peter 1:19-21 KJV
People disagree endlessly about Bible verses. If you think one party has the true meaning and all others are incorrect, then it would make sense for you to think there's nothing esoteric about it.
But personally, I can open the Bible to any page and put my finger just about anywhere and find a line that I'm not confident that I understand. Many people have studied it diligently their whole lives and still have unanswered questions. Why? Because it's definitively esoteric.