1 Corinthians 14:2

For one who speaks in an unknown tongue does not speak to people but to God; for no one understands him or catches his meaning, but by the Spirit he speaks mysteries [secret truths, hidden things].

1 Corinthians 13:2

And if I have the gift of prophecy [and speak a new message from God to the people], and understand all mysteries, and [possess] all knowledge; and if I have all [sufficient] faith so that I can remove mountains, but do not have love [reaching out to others], I am nothing.

Mark 16:17

These signs will accompany those who have believed: in My name they will cast out demons, they will speak in new tongues;

Acts 10:46

For they heard them talking in [unknown] tongues (languages) and exalting and magnifying and praising God. Then Peter said,

Acts 19:6

And when Paul laid his hands on them, the Holy Spirit came on them, and they began speaking in [unknown] tongues (languages) and prophesying.

Genesis 11:7

Come, let Us (Father, Son, Holy Spirit) go down and there confuse and mix up their language, so that they will not understand one another’s speech.”

Genesis 42:23

They did not know that Joseph understood [their conversation], because he spoke to them through an interpreter.

Deuteronomy 28:49

“The Lord will bring a nation against you from far away, from the end of the earth, [as swift] as the eagle swoops down [to attack], a nation whose language you will not understand,

Psalm 49:3-4


My mouth will speak wisdom,
And the meditation of my heart will be understanding.

Psalm 78:2


I will open my mouth in a parable [to instruct using examples];
I will utter dark and puzzling sayings of old [that contain important truth]—

Matthew 13:11

Jesus replied to them, “To you it has been granted to know the mysteries of the kingdom of heaven, but to them it has not been granted.

Mark 4:11

He said to them, “The mystery of the kingdom of God has been given to you [who have teachable hearts], but those who are outside [the unbelievers, the spiritually blind] get everything in parables,

Acts 2:4-11

And they were all filled [that is, diffused throughout their being] with the Holy Spirit and began to speak in other tongues (different languages), as the Spirit was giving them the ability to speak out [clearly and appropriately].

Acts 22:9

Now those who were with me saw the light, but did not understand the voice of the One who was speaking to me.

Romans 16:25

Now to Him who is able to establish and strengthen you [in the faith] according to my gospel and the preaching of Jesus Christ, according to the revelation of the mystery [of the plan of salvation] which has been kept secret for long ages past,

1 Corinthians 2:7

but we speak God’s wisdom in a mystery, the wisdom once hidden [from man, but now revealed to us by God, that wisdom] which God predestined before the ages to our glory [to lift us into the glory of His presence].

1 Corinthians 2:10

For God has unveiled them and revealed them to us through the [Holy] Spirit; for the Spirit searches all things [diligently], even [sounding and measuring] the [profound] depths of God [the divine counsels and things far beyond human understanding].

1 Corinthians 14:9-11

So it is with you, if you speak words [in an unknown tongue] that are not intelligible and clear, how will anyone understand what you are saying? You will be talking into the air [wasting your breath]!

1 Corinthians 14:16

Otherwise if you bless [and give thanks to God] in the spirit only, how will any outsider or someone who is not gifted [in spiritual matters] say the “Amen” [of agreement] to your thanksgiving, since he does not know what you are saying?

1 Corinthians 14:18-23

I thank God that I speak in [unknown] tongues more than all of you;

1 Corinthians 14:27-28

If anyone speaks in a tongue, it should be limited to two or at the most three, and each one speaking in turn, and one must interpret [what is said].

1 Corinthians 15:51

Listen very carefully, I tell you a mystery [a secret truth decreed by God and previously hidden, but now revealed]; we will not all sleep [in death], but we will all be [completely] changed [wondrously transformed],

Ephesians 3:3-9

and that by [divine] revelation the mystery was made known to me, as I have already written in brief.

Ephesians 6:19

And pray for me, that words may be given to me when I open my mouth, to proclaim boldly the mystery of the good news [of salvation],

Colossians 1:26-27

that is, the mystery which was hidden [from angels and mankind] for ages and generations, but has now been revealed to His saints (God’s people).

Colossians 2:2

[For my hope is] that their hearts may be encouraged as they are knit together in [unselfish] love, so that they may have all the riches that come from the full assurance of understanding [the joy of salvation], resulting in a true [and more intimate] knowledge of the mystery of God, that is, Christ,

1 Timothy 3:9

but upholding and fully understanding the mystery [that is, the true doctrine] of the [Christian] faith with a clear conscience [resulting from behavior consistent with spiritual maturity].

1 Timothy 3:16

And great, we confess, is the mystery [the hidden truth] of godliness:He (Jesus Christ) who was revealed in human flesh,
Was justified and vindicated in the Spirit,
Seen by angels,
Preached among the nations,
Believed on in the world,
Taken up in glory.

Revelation 10:7

but when it is time for the trumpet call of the seventh angel, when he is about to sound, then the mystery of God [that is, His hidden purpose and plan] is finished, as He announced the gospel to His servants the prophets.

2 Kings 18:26

Then Eliakim the son of Hilkiah, and Shebna and Joah, said to the Rabshakeh, “Please speak to your servants in the Aramaic (Syrian) language, because we understand it; and do not speak with us in the Judean (Hebrew) language in the hearing of the people who are on the wall.”

Treasury of Scripture Knowledge

Summary

For he that speaketh in an unknown tongue speaketh not unto men, but unto God: for no man understandeth him; howbeit in the spirit he speaketh mysteries.

Understandeth

Bible References

He that

1 Corinthians 14:9
So it is with you, if you speak words [in an unknown tongue] that are not intelligible and clear, how will anyone understand what you are saying? You will be talking into the air [wasting your breath]!
Genesis 11:7
Come, let Us (Father, Son, Holy Spirit) go down and there confuse and mix up their language, so that they will not understand one another’s speech.”
Genesis 42:23
They did not know that Joseph understood [their conversation], because he spoke to them through an interpreter.
Deuteronomy 28:49
“The Lord will bring a nation against you from far away, from the end of the earth, [as swift] as the eagle swoops down [to attack], a nation whose language you will not understand,
2 Kings 18:26
Then Eliakim the son of Hilkiah, and Shebna and Joah, said to the Rabshakeh, “Please speak to your servants in the Aramaic (Syrian) language, because we understand it; and do not speak with us in the Judean (Hebrew) language in the hearing of the people who are on the wall.”
Acts 2:4
And they were all filled [that is, diffused throughout their being] with the Holy Spirit and began to speak in other tongues (different languages), as the Spirit was giving them the ability to speak out [clearly and appropriately].
Acts 10:46
For they heard them talking in [unknown] tongues (languages) and exalting and magnifying and praising God. Then Peter said,
Acts 19:6
And when Paul laid his hands on them, the Holy Spirit came on them, and they began speaking in [unknown] tongues (languages) and prophesying.

Understandeth

Acts 22:9
Now those who were with me saw the light, but did not understand the voice of the One who was speaking to me.

Howbeit

1 Corinthians 2:7
but we speak God’s wisdom in a mystery, the wisdom once hidden [from man, but now revealed to us by God, that wisdom] which God predestined before the ages to our glory [to lift us into the glory of His presence].
1 Corinthians 13:2
And if I have the gift of prophecy [and speak a new message from God to the people], and understand all mysteries, and [possess] all knowledge; and if I have all [sufficient] faith so that I can remove mountains, but do not have love [reaching out to others], I am nothing.
1 Corinthians 15:51
Listen very carefully, I tell you a mystery [a secret truth decreed by God and previously hidden, but now revealed]; we will not all sleep [in death], but we will all be [completely] changed [wondrously transformed],
Psalm 49:3

My mouth will speak wisdom,
And the meditation of my heart will be understanding.
Psalm 78:2

I will open my mouth in a parable [to instruct using examples];
I will utter dark and puzzling sayings of old [that contain important truth]—
Matthew 13:11
Jesus replied to them, “To you it has been granted to know the mysteries of the kingdom of heaven, but to them it has not been granted.
Mark 4:11
He said to them, “The mystery of the kingdom of God has been given to you [who have teachable hearts], but those who are outside [the unbelievers, the spiritually blind] get everything in parables,
Romans 16:25
Now to Him who is able to establish and strengthen you [in the faith] according to my gospel and the preaching of Jesus Christ, according to the revelation of the mystery [of the plan of salvation] which has been kept secret for long ages past,
Ephesians 3:3
and that by [divine] revelation the mystery was made known to me, as I have already written in brief.
Ephesians 6:19
And pray for me, that words may be given to me when I open my mouth, to proclaim boldly the mystery of the good news [of salvation],
Colossians 1:26
that is, the mystery which was hidden [from angels and mankind] for ages and generations, but has now been revealed to His saints (God’s people).
Colossians 2:2
[For my hope is] that their hearts may be encouraged as they are knit together in [unselfish] love, so that they may have all the riches that come from the full assurance of understanding [the joy of salvation], resulting in a true [and more intimate] knowledge of the mystery of God, that is, Christ,
1 Timothy 3:9
but upholding and fully understanding the mystery [that is, the true doctrine] of the [Christian] faith with a clear conscience [resulting from behavior consistent with spiritual maturity].
Revelation 10:7
but when it is time for the trumpet call of the seventh angel, when he is about to sound, then the mystery of God [that is, His hidden purpose and plan] is finished, as He announced the gospel to His servants the prophets.