If I can only make clear this one thing, it will give us a basis on which to build. Man cannot discover God or his ways by mere mental processes. One must be governed by the laws which control the realm into which he is delving. To become a plumber, one must study the laws which govern plumbing. He must know stresses and strains, temperatures at which pipes will freeze, laws which govern steam, hot water, expansion, contraction, and so forth. One might know much about plumbing and be a complete failure in training children or getting along with men. One might be the best of bookkeepers and yet not know anything of electricity. One might know much about buying and selling groceries and be absolutely ignorant of bridge building.
The spiritual realm, which is just as absolute as is the physical, cannot be understood by the laws of the physical. You do not learn to make electric generators in a seminary. Neither do you learn certain truths about spiritual things in a physics laboratory. You must go to the spiritual laboratory, use the facilities available there, and comply with the governing rules.
He has given the key. You may know. You need not be in doubt. Follow the prescribed procedures, and you may have an absolute knowledge that these things are absolute truths. The necessary procedure is: study, think, pray, and do. Revelation is the key. God will make it known to you once you have capitulated and have become humble and receptive. Having dropped all pride of your mental stature, having acknowledged before God your confusion, having subjected your egotism, and having surrendered yourself to the teaching of the Holy Spirit, you are ready to begin to learn. With preconceived notions stubbornly held, one is not teachable. The Lord has promised repeatedly that he will give you a knowledge of spiritual things when you have placed yourself in a proper frame of mind.