Then Simeon blessed them, and said to Jesus' mother Mary, “This child is destined to cause many in Israel to fall and many to rise. He is a sign from God that many will reject,
Jesus answered John's disciples, “Go and tell John what you've seen and heard. The blind see, the lame walk, the lepers cured, the deaf hear, the dead raised back to life, the poor are told the good news.
After the messengers from John had left, Jesus began telling the crowd, “About John: what did you expect to see when you went out to meet him in the desert? Some reed blown about by the wind?
Of course people who are not spiritual don't accept what comes from God's Spirit. It's just foolish nonsense to them, and they can't understand it, because what is spiritual has to be properly examined.