1 Corinthians 2:13

[things] which we also speak, not in words taught by human wisdom, but in [words] taught by the Spirit, explaining spiritual [things] to spiritual [people].

1 Corinthians 1:17

For Christ did not send me to baptize, but to proclaim the gospel, not with {clever speech}, lest the cross of Christ be emptied.

1 Corinthians 2:4

and my speech and my preaching [were] not with the persuasiveness of wisdom, but with a demonstration of the Spirit and power,

Luke 12:12

for the Holy Spirit will teach you in [that] same hour what it is necessary to say."

Acts 2:4

And they were all filled with the Holy Spirit and began to speak in other languages as the Spirit gave them [ability] to speak out.

1 Corinthians 2:1

And I, [when I] came to you, brothers, did not come with superiority of speech or of wisdom, proclaiming to you the testimony of God.

1 Corinthians 2:14

But the natural man does not accept the things of the Spirit of God, for they are foolishness to him, and he is not able to understand [them], because they are spiritually discerned.

1 Corinthians 9:11

If we have sown spiritual [things] among you, [is it too] great [a thing] if we reap material [things] from you?

1 Corinthians 10:3-5

and all ate the same spiritual food,

1 Corinthians 12:1-3

Now concerning spiritual [gifts], brothers, I do not want you to be ignorant.

1 Corinthians 14:2

For the one who speaks in a tongue does not speak to people but to God, because no one understands, but by the Spirit he speaks mysteries.

Ephesians 5:19

speaking to one another in psalms and hymns and spiritual songs, singing and singing praise in your heart to the Lord,

Colossians 3:16

Let the word of Christ dwell in you richly, teaching and admonishing one another with all wisdom, with psalms, hymns, [and] spiritual songs, singing with thankfulness in your hearts to God,

1 Peter 1:12

to whom it was revealed that they were serving not themselves but you with reference to the same [things] which now have been announced to you through those who proclaimed the gospel to you by the Holy Spirit sent from heaven, {things into which} angels desire to look.

2 Peter 1:16

For we did not make known to you the power and coming of our Lord Jesus Christ [by] following ingeniously concocted myths, but [by] being eyewitnesses of that one's majesty.

Treasury of Scripture Knowledge

Summary

Which things also we speak, not in the words which man's wisdom teacheth, but which the Holy Ghost teacheth; comparing spiritual things with spiritual.

Bible References

Spiritual things

1 Corinthians 2:14
But the natural man does not accept the things of the Spirit of God, for they are foolishness to him, and he is not able to understand [them], because they are spiritually discerned.
1 Corinthians 9:11
If we have sown spiritual [things] among you, [is it too] great [a thing] if we reap material [things] from you?
1 Corinthians 10:3
and all ate the same spiritual food,
Ephesians 5:19
speaking to one another in psalms and hymns and spiritual songs, singing and singing praise in your heart to the Lord,
Colossians 3:16
Let the word of Christ dwell in you richly, teaching and admonishing one another with all wisdom, with psalms, hymns, [and] spiritual songs, singing with thankfulness in your hearts to God,