In conversion you are not attached primarily to an order, nor to an institution, nor a movement, nor a set of beliefs, nor a code of action - you are attached primarily to a Person, and secondarily to these other things.
When the depths are upheld by the Holy Spirit, then the reaction is Christian.
In the ordinary church, it is suppressed by respectability, by a desire to appear better than we really are.
God, to redeem us at the deepest portion of our nature - the urge to love and be loved - must reveal His nature in an incredible and impossible way. He must reveal it at a cross.
Here he tells us that the new birth is first of all 'not of blood'. You don't get it through the blood stream, through heredity. Your parents can give you much, but they cannot give you this.
We grow small trying to be great.