Nicodemus said to him, "How can a man be born when he is old? Can he enter his mother's womb over again and be born?"
The unspiritual man rejects these truths of the Spirit of God; to him they are 'sheer folly,' he cannot understand them. And the reason is, that they must be read with the spiritual eye.
Those who are doomed to perish find the story of the cross 'sheer folly,' but it means the power of God for those whom he saves.
Jesus replied, "Truly, truly I tell you, no one can see God's Realm unless he is born from above."
So Jesus said to them, "Truly, truly I tell you, unless you eat the flesh of the Son of man and drink his blood, you have no life within you.
Now many of his disciples, on hearing it, said, "This is hard to take in! Who can listen to talk like this?"
Jesus replied, "Truly, truly I tell you, unless one is born of water and the Spirit, he cannot enter God's Realm.