My thought is that Jesus didn't speak straight forward, but spoke in illustrations. Such illustrations were able to weed out people along with their intentions and motivations. It allowed some to find God and all he represented and it allowed others to set up power structures and class levels and for people to give up on their search for God and allow others to do it for them.
I believe the message becomes clear when you search for it and are directed towards it. Basically, it is love and forgiveness and a relationship with God. But as much as I read the Bible as a jw, that point never reached my heart. I had no clue what grace was. I never would have figured it out on my own. I had to reach the bottom before I was able to search for him and discover it. As a jw, I was lost!
People love idolatry. They are created to worship. If they can't put their heart around God, they will quickly allow themselves to follow an idea or a man. It is so easy to become a follower and not a searcher. Isn't it much easier to believe that you are in an org with all the answers rather than having to discover all the mysterys of life and a relationship with God on your own. God works on individuals and not organiztions. His spirit changes us all on in the inside and allows us to achieve his purpose. A life with God puts you into community and a church, but church isn't the essence of a relationship with God, it is a small part of it.
Religion has messed up the gospel in that it has an inherent need for works which is opposed to the gospel message. Worship that is dominated by grace allows it's members to do good for the joy of doing good and accomplishing God's purpose. It makes one selfless and loving.
I love a sermon by Mark Driscoll from Mars Hill Church in Seattle that explains how religion is the second enemy of the gospel after idolatry. I think it is the best sermon I have heard in my life. It can be found at Mars Hill Church, Creative Church Conference May 29,2007, on iTunes. I love it! It is a video which can be seen on your computer or iPod.
In conclusion, I think the message is hidden and that it is hidden so that it must be searched for. I think that expresses to God our sincere interest in searching for HIM or for others or our own desire. I do believe that a sincere individual will be led to it. I do believe once you discover it, it becomes very evident that you have discovered the truth. That is my experience in life up to this point; 41 years and going!
Hope that is somewhat helpful....