I do not believe in secret codes and messages. I believe God revealed in scripture all we need to know.
Deuteronomy 28:29 says "The secret things belong to the LORD our God, but the things that are revealed belong to us and to our children forever, that we may do all the words of this law.
God does not reveal everything he knows. We could not comprehend it. Not many would claim to comprehend everything God has revealed. But he has revealed what he wants us to know.
God does not conceal things we need to know. That would be mean. God loves his people and cares for them.
So, spend your time comprehending the revealed word of Almighty God. Do not waste your time trying to create and discover supposedly hidden mysteries or knowledge.