The second idea is, as J I Packer discusses in his book Knowing God, having knowledge about God is very different from knowing God. Knowing God entails not only knowing about the twists and turns of the path of walking the christian life, but also the actual walking of the path. It is atrocious and hypocritical to simply have a theoretical knowledge about God without applying the knowledge to our lives. That is why Paul says in Ephesians, "Wherefore he saith, 'Awake thou that sleepest, and arise from the dead, and Christ shall give thee light.' See then that ye walk circumspectly, not as fools, but as wise, redeeming the time, because the days are evil. Wherefore be ye not unwise, but understanding what the will of the Lord is."
Shalom,
Patrick