To remove mystery reduces God and our universe and our potential down to the level of our current knowledge and purely human imagination. Mystery extends God and our universe by unlimited dimensions of what is and not what is known. Our imagination extended by the Spirit of God extends what we know in our four dimensions by unsounded vastness. The Spirit of God searches all things, even God’s own thoughts:
“That is what the Scriptures mean when they say, ‘No eye has seen, no ear has heard,
and no mind has imagined what God has prepared for those who love him.’ But it was to us that God revealed these things by his Spirit. For his Spirit searches out everything and shows us God’s deep secrets. No one can know a person’s thoughts except that person’s own spirit, and no one can know God’s thoughts except God’s own Spirit.” (1 Corinthians 2:9-11 NLT)
Without extending our thoughts by extending our natural minds to know God Himself through the Spirit of God, our reality remains a small fraction of what the five senses tell us of the four dimensional world. Thus we are stuck in length, width, height, and time. We are stuck in a linear and cause and effect world that becomes our prison.
As an example, consider the concept of salvation. In causal, linear reality, our actions cause us to experience consequences commensurate to those actions. Eastern religions call this Karma. Christianity calls this the Law. The Law is not a false reality. Fortunately there is a get out of jail card! God Himself became flesh: the biggest mystery of all. With Jesus, God in the flesh, the kingdom of heaven, the kingdom of God, invades earth. The event of the cross is a penetration of eternal power, eternal dimension, into earth, and offers us the choice of living beyond the Law, beyond the four dimensions.