Machinehead,
I hope that doesn't mean that no one can penetrate your head.

Many people ask this question, even born again Christians.
Smart people also ask this question. That means God has already touched your heart. God is holding your hand now and he isn't going to let go.
The Bible tells us of this beautiful scripture in Rev.3:20 "Here I am! I stand at the door and knock. If anyone hears my voice and opens the door, I will come in and eat with him, and he with me." You see, Jesus waits for you to invite him into your heart. Are you willing? If you are, you will be 'Born Again"

God bless,
bluelake