1 Corinthians 2:14

An unspiritual man does not accept the things that the Spirit of God teaches, for they are nonsense to him; and he cannot understand them, because they are appreciated by spiritual insight.

1 Corinthians 1:18

For the message of the cross is nonsense to those who are in the process of being destroyed, but it is the power of God to those who are in the process of being saved.

Jude 1:19

These are men who cause divisions; mere animals, destitute of any spiritual nature,

Matthew 13:11-17

He answered: "It is you and not they who are granted the privilege of knowing the secrets of the kingdom of heaven.

1 Corinthians 15:44

it is sown a physical body, it is raised a spiritual body. If there is a physical body, there is a spiritual body too.

Matthew 16:23

But He turned and said to Peter, "Get out of my way, you Satan! You are a hindrance to me, for this view of yours is not from God but from men."

John 3:3-6

Jesus answered him, "I most solemnly say to you, no one can ever see the kingdom of God, unless he is born from above."

John 5:44

How can you believe, you who are always accepting honor from one another, but never seek the honor that comes from the one God?

John 8:51-52

I most solemnly say to you, if anyone follows my teaching, he will never experience death."

1 Corinthians 15:46

But it is not the spiritual that comes first; it is the physical, and then the spiritual.

James 3:15

This is not the kind of wisdom that comes down from above; no, it is earthly, human, demoniacal.

John 6:44-45

No one can come to me unless the Father who sent me draws him to me; then I myself will raise him to life on the last day.

John 8:43

Why is it that you misunderstand what I say? It is because you cannot listen to what I teach.

John 10:20

Many of them said, "He is under the power of a demon and is going crazy. Why are you listening to Him?"

John 10:26-27

but still you do not believe in me, for you do not belong to my sheep.

John 12:37

Although He had performed so many wonder-works right before their eyes, they did not believe in Him,

John 14:26

But the Helper, the Holy Spirit, whom the Father will send to represent me, will teach you everything Himself, and cause you to remember everything that I have told you.

John 15:26

"When the Helper comes whom I will send from the Father to you, the Spirit of truth that comes from the Father, He will testify to me.

John 16:8-15

"And when He comes, He will bring conviction to worldly people about sin and uprightness and judgment;

Acts 16:14

Among them was a woman named Lydia, a dealer in purple goods from the town of Thyatira, and she stayed to listen to us. She was already a worshiper of God, and the Lord so moved upon her heart that she accepted the message spoken by Paul.

Acts 17:18

Some of the Epicurean and the Stoic philosophers began to debate with him; and some said, "What is this scraps-of-truth-picker trying to say?" Others said, "He seems to be a preacher of foreign deities." They said so because he was telling the good news of Jesus and the resurrection.

Acts 17:32

But when they heard of the resurrection of the dead, some sneered, but others said, "We will hear you again on this subject."

Acts 18:15

but as it is questions about words and titles and your own law, you will have to see to it yourselves. I refuse to act as judge in these matters."

Acts 25:19

They merely had a quarrel with him about their own religion and about a certain Jesus who had died, but who Paul kept saying was still alive.

Acts 26:24-25

As Paul continued to make his defense, Festus shouted aloud, "You are going crazy, Paul! That great learning of yours is driving you crazy!"

Romans 8:5-8

For people who live by the standard set by their lower nature are usually thinking the things suggested by that nature, and people who live by the standard set by the Spirit are usually thinking the things suggested by the Spirit.

1 Corinthians 1:23

we are preaching the Christ who was crucified -- a message that is a trap-stick to the Jews and nonsense to the Greeks,

1 Corinthians 2:12

Now we have not received the spirit that belongs to the world but the Spirit that comes from God, that we may get an insight into the blessings God has graciously given us.

2 Corinthians 4:4-6

In their case, the god of this world has blinded the eyes of the unbelievers, to keep the glorious light of the good news of Christ, who is the likeness of God, from dawning upon them.

1 John 2:20

But you have been anointed by the Holy One. You all know the truth;

1 John 2:27

The anointing of the Spirit which you received still remains in your hearts, and so you have no need that anyone should teach you. But just as that anointing of His teaches you about everything, and as it is true and no falsehood, and as it has taught you to do so, you must continue to live in union with Him.

1 John 5:20

And we know that the Son of God has come, and has given us insight to recognize the True One; and we are in union with the True One through His Son, Jesus Christ. He is the true God and eternal life.

Treasury of Scripture Knowledge

Summary

But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned.

General references

Bible References

Receiveth

Matthew 13:11
He answered: "It is you and not they who are granted the privilege of knowing the secrets of the kingdom of heaven.
Matthew 16:23
But He turned and said to Peter, "Get out of my way, you Satan! You are a hindrance to me, for this view of yours is not from God but from men."
John 3:3
Jesus answered him, "I most solemnly say to you, no one can ever see the kingdom of God, unless he is born from above."
John 8:43
Why is it that you misunderstand what I say? It is because you cannot listen to what I teach.
John 10:26
but still you do not believe in me, for you do not belong to my sheep.
John 12:37
Although He had performed so many wonder-works right before their eyes, they did not believe in Him,
Romans 8:5
For people who live by the standard set by their lower nature are usually thinking the things suggested by that nature, and people who live by the standard set by the Spirit are usually thinking the things suggested by the Spirit.

The things

1 Corinthians 2:12
Now we have not received the spirit that belongs to the world but the Spirit that comes from God, that we may get an insight into the blessings God has graciously given us.
John 14:26
But the Helper, the Holy Spirit, whom the Father will send to represent me, will teach you everything Himself, and cause you to remember everything that I have told you.
John 15:26
"When the Helper comes whom I will send from the Father to you, the Spirit of truth that comes from the Father, He will testify to me.
John 16:8
"And when He comes, He will bring conviction to worldly people about sin and uprightness and judgment;

They

1 Corinthians 1:18
For the message of the cross is nonsense to those who are in the process of being destroyed, but it is the power of God to those who are in the process of being saved.
John 8:51
I most solemnly say to you, if anyone follows my teaching, he will never experience death."
John 10:20
Many of them said, "He is under the power of a demon and is going crazy. Why are you listening to Him?"
Acts 17:18
Some of the Epicurean and the Stoic philosophers began to debate with him; and some said, "What is this scraps-of-truth-picker trying to say?" Others said, "He seems to be a preacher of foreign deities." They said so because he was telling the good news of Jesus and the resurrection.
Acts 18:15
but as it is questions about words and titles and your own law, you will have to see to it yourselves. I refuse to act as judge in these matters."
Acts 25:19
They merely had a quarrel with him about their own religion and about a certain Jesus who had died, but who Paul kept saying was still alive.
Acts 26:24
As Paul continued to make his defense, Festus shouted aloud, "You are going crazy, Paul! That great learning of yours is driving you crazy!"

General references

Luke 7:23
And happy is the man who finds no cause for stumbling over me."
John 1:5
So the light continues to shine in the darkness, for the darkness has never overpowered it.