Isaiah 32:4

And the heart of the rash shall understand knowledge, and the tongue of those who stutter shall be ready to speak plainly.

Isaiah 29:24

Those who erred in spirit shall come to understanding, and those who murmured shall learn doctrine.

Exodus 4:11

And Jehovah said to him, Who has made man's mouth? Or who makes the dumb, or deaf, or the seeing, or the blind? Have not I, Jehovah?

Nehemiah 8:8-12

And they read in the Book of the Law of God, clearly. And they gave the sense, and caused them to understand the reading.

Song of Songs 7:9

and the roof of your mouth like the best wine for my Beloved, that goes down smoothly for my Beloved, flowing softly over the lips of sleeping ones.

Matthew 11:25

At that time Jesus answered and said, I thank You, O Father, Lord of Heaven and earth, because You have hidden these things from the sophisticated and cunning, and revealed them to babes.

Matthew 16:17

Jesus answered and said to him, You are blessed, Simon, son of Jonah, for flesh and blood did not reveal it to you, but My Father in Heaven.

Luke 21:14-15

Therefore settle it in your hearts not to meditate beforehand what you shall answer.

Acts 2:4-12

And they were all filled of the Holy Spirit, and began to speak in other languages, as the Spirit gave them utterance.

Acts 4:13

But seeing the boldness of Peter and John, and perceiving that they were unlearned and uneducated men, they marveled. And they recognized them, that they had been with Jesus.

Acts 6:7

And the Word of God was increasing. And the number of the disciples in Jerusalem was multiplying exceedingly; even a great crowd of the priests obeyed the faith.

Acts 26:9-11

I truly thought within myself that I ought to do many things contrary to the name of Jesus of Nazareth,

Galatians 1:23

But only they were hearing that he who then persecuted us, now preaches the faith which he once ravaged.

Treasury of Scripture Knowledge

Summary

The heart also of the rash shall understand knowledge, and the tongue of the stammerers shall be ready to speak plainly.

General references

Bible References

Heart

Isaiah 29:24
Those who erred in spirit shall come to understanding, and those who murmured shall learn doctrine.
Nehemiah 8:8
And they read in the Book of the Law of God, clearly. And they gave the sense, and caused them to understand the reading.
Matthew 11:25
At that time Jesus answered and said, I thank You, O Father, Lord of Heaven and earth, because You have hidden these things from the sophisticated and cunning, and revealed them to babes.
Matthew 16:17
Jesus answered and said to him, You are blessed, Simon, son of Jonah, for flesh and blood did not reveal it to you, but My Father in Heaven.
Acts 6:7
And the Word of God was increasing. And the number of the disciples in Jerusalem was multiplying exceedingly; even a great crowd of the priests obeyed the faith.
Acts 26:9
I truly thought within myself that I ought to do many things contrary to the name of Jesus of Nazareth,
Galatians 1:23
But only they were hearing that he who then persecuted us, now preaches the faith which he once ravaged.

General references

Mark 7:35
And instantly his ears were opened and the bond of his tongue was loosened, and he spoke plainly.