Nicodemus was disqualified from entering the Kingdom of God because his attention was on physical things. Nico came to and saw Jesus as a teacher instead of as God thus making it impossible to receive life from God. Though John had proclaimed it, His own could not receive Him but those who believed Him, He conferred upon them the right to become sons of God. God's Spirit doesn't only lead us into the fish's mouth for money or wealth but also into the wilderness where we can fast and be tempted and fulfil our God-given mandate.