
For this people's heart is waxed gross, and their ears are dull of hearing, and their eyes they have closed; lest at any time they should see with their eyes, and hear with their ears, and should understand with their heart, and should be converted, and I should heal them. (Matthew 13:15)
Contrast that heart with this one...
But he that received seed into the good ground is he that heareth the word, and understandeth it; which also beareth fruit, and bringeth forth, some an hundredfold, some sixty, some thirty. (Matthew 13:23)
If I have an open heart, I'll hear the word, understand it, and my life will bear fruit!
So here's the real question: Am I open to hear, or do I think I know it all and can't be taught anything else? Do I have a teachable spirit?
I'm convinced that sometimes God purposely uses unexpected ways and unlikely people to share great and deep truths with us. To hear, we might have to humble ourselves or let go of preconceived ideas. If we're too hung up on the messenger, we could miss a great blessing - just ask Naaman about that (2 Kings 5).
How To Get Revelation
First, the word of God is truth (John 17:17), and we must never deviate, add to or take away from the scriptures.
Secondly, don't forget that the Holy Ghost is the Spirit of Truth. We need the Holy Ghost to be led in to all truth (John 16:13) and keep in mind that God's Spirit will never go against God's Word. Jesus told his disciples not to start preaching until they received the Holy Ghost! (Acts 1-2)
Third, truth has always been there, but our understanding of truth may need ongoing development. Peter wrote, “But grow in grace, and in the knowledge of our Lord and Saviour Jesus Christ...” (2 Peter 3:18). Growing means there's more to learn.
Church should be the perfect setting for interactive teaching and open discussions that lead to growth and revelation in the word. Allow me to use a simple beach ball to illustrate how to get revelation...

Everyone of us approaches truth from a different angle based on how we've been taught, personal experiences, relationship with God, etc. Let's imagine we're looking at a beach ball for the very first time. From my angle, I see something round with blue, white, and yellow stripes. Someone else from a different angle agrees that it's round, but disagrees with the yellow and blue. "It's just red and white! No blue or yellow at all!
Some will end fellowship right there because of disagreement. But if we can agree to stay in the word and try to understand each other, we might come to realize that we both lack the 3-dimensional perspective. What we know individually is good and right, but incomplete. If we can reason together, forebear with one another, discuss it, and pray about it, we'll both get a more perfect understanding. This might take more than one discussion.
Later we'll meet someone else with even more understanding, and they'll blow us away by explaining how this beach ball truth is not only round and colorful, but it bounces, floats and if you let the air out, it goes flat! But he's a kook who fasts and prays a lot - way too much if you ask me - and who's gonna believe him? Ha ha. Let the air out...that's funny...
Truth and revelation may come a puzzle piece at a time. But if we have the right heart, if we're open to learn, if we pray and seek the Lord, if we read and study the Word for ourselves we'll come to understand how those pieces all connect together to form a beautiful secret the world will never see. That's how to get revelation!