Proverbs 15:14

The heart of him who has understanding seeks knowledge, but the mouth of fools feeds on folly.

1 Kings 3:6-12

And Solomon said, Thou have shown to thy servant David my father great loving kindness, according as he walked before thee in truth, and in righteousness, and in uprightness of heart with thee. And thou have kept for him this great

Psalm 119:97

O how I love thy law! It is my meditation all the day.

Psalm 119:100

I understand more than the aged because I have kept thy precepts.

Proverbs 1:5

that the wise man may hear, and increase in learning, and that the man of understanding may attain to sound counsels,

Proverbs 9:9

Give opportunity to a wise man, and he will be yet wiser. Teach a righteous man, and he will increase in learning.

Proverbs 12:23

A prudent man conceals knowledge, but the heart of fools proclaims foolishness.

Proverbs 18:15

The heart of a prudent man gets knowledge, and the ear of the wise seeks knowledge.

Isaiah 30:10

who say to the seers, Do not see, and to the prophets, Do not prophesy to us right things. Speak to us smooth things. Prophesy deceits.

Isaiah 44:20

He feeds on ashes. A deceived heart has turned him aside. And he cannot deliver his soul, nor say, Is there not a lie in my right hand?

Hosea 12:1

Ephraim feeds on wind, and follows after the east wind. He continually multiplies lies and desolation. And they make a covenant with Assyria, and oil is carried into Egypt.

Acts 17:11

But these were more noble than those in Thessalonica, who received the word with all willingness, examining the Scriptures daily, if it has these things this way.

2 Peter 3:18

But grow in the grace and knowledge of our Lord and Savior Jesus Christ. To him is the glory both now and into the day of the age. Truly.

Treasury of Scripture Knowledge

Summary

The heart of him that hath understanding seeketh knowledge: but the mouth of fools feedeth on foolishness.

General references

Bible References

Heart

Proverbs 1:5
that the wise man may hear, and increase in learning, and that the man of understanding may attain to sound counsels,
Proverbs 9:9
Give opportunity to a wise man, and he will be yet wiser. Teach a righteous man, and he will increase in learning.
1 Kings 3:6
And Solomon said, Thou have shown to thy servant David my father great loving kindness, according as he walked before thee in truth, and in righteousness, and in uprightness of heart with thee. And thou have kept for him this great
Psalm 119:97
O how I love thy law! It is my meditation all the day.
Acts 17:11
But these were more noble than those in Thessalonica, who received the word with all willingness, examining the Scriptures daily, if it has these things this way.
2 Peter 3:18
But grow in the grace and knowledge of our Lord and Savior Jesus Christ. To him is the glory both now and into the day of the age. Truly.

The mouth

Proverbs 12:23
A prudent man conceals knowledge, but the heart of fools proclaims foolishness.
Isaiah 30:10
who say to the seers, Do not see, and to the prophets, Do not prophesy to us right things. Speak to us smooth things. Prophesy deceits.
Isaiah 44:20
He feeds on ashes. A deceived heart has turned him aside. And he cannot deliver his soul, nor say, Is there not a lie in my right hand?
Hosea 12:1
Ephraim feeds on wind, and follows after the east wind. He continually multiplies lies and desolation. And they make a covenant with Assyria, and oil is carried into Egypt.

General references

Proverbs 8:9
They are all plain to him who understands, and right to those who find knowledge.
Proverbs 18:15
The heart of a prudent man gets knowledge, and the ear of the wise seeks knowledge.