According to author, if you try to explain all reality according to all you know it will be like a guy explaining the earth from the window of a plane, If you want to know what is reality, you should get your parachute and jump, fell the wind, the sun etc.
It is, there is so much to be known about God, but you will really go far walking with Jesus. It is a hard task to pretend you are sure of God after studying all Bible, we don't know what kind of subjectivity you have in your assurance, thought you have got the right source, the Bible has the source, the true about Jesus, but it is just the beggining, but you can know the must by your life with God.
"Christian folk have often claimed to know too much. We've been guilty of speaking with far too much certainty... They load you up with words, propositions, assertions, and aculturated behaviors, and then send you out as some sort of fleshy trump card to the gazillion other cards in the human deck - an agent of the gospel in the soul-saving business"
"The best we can do is (1) make a confession, and (2) offer an invitation. One, we confess we have a starting place for looking at life... Two, we invite you to come over and stand where we're standing at the starting place of who and what we're sure of -Jesus"
With this I can remember two texts in the Bible:
"Jesus' disciples saw him do many other miraculous signs besides the ones recorded in this book. But these are written so that you may believe that Jesus is the Messiah, the Son of God, and that by believing in him you will have life" John 20:30-31
"I had heard about you before, but now I have seen you with my own eyes" Job 42:5
Knowledge of God will not come so much from the books you read and the simposiums you assist, but rather living with Him and living with those who live with him.