Nicodemus asked, “How can a grown man ever be born a second time?”
Jesus replied, “I tell you for certain that you must be born from above before you can see God's kingdom!”
Jesus answered: I tell you for certain that before you can get into God's kingdom, you must be born not only by water, but by the Spirit.
Jesus answered: I tell you for certain that you won't live unless you eat the flesh and drink the blood of the Son of Man.
Many of Jesus' disciples heard him and said, “This is too hard for anyone to understand.”
The message about the cross doesn't make any sense to lost people. But for those of us who are being saved, it is God's power at work.
That's why only someone who has God's Spirit can understand spiritual blessings. Anyone who doesn't have God's Spirit thinks these blessings are foolish.