heart

Proverbs 1:5
let the wise listen and gain instruction, and the discerning acquire wise counsel--

Proverbs 9:9
Instruct a wise man, and he will be wiser still; teach a righteous man, and he will increase his learning.

1 Kings 3:6-12
Solomon replied, "You have shown great loving devotion to Your servant, my father David, because he walked before You in truth, righteousness, and uprightness of heart. And You have kept this great loving devotion by giving him a son to sit on his throne this very day. . . .

Psalm 119:97, 100
Oh, how I love Your law! All day long it is my meditation. . . .

Acts 17:11
Now the Bereans were more noble-minded than the Thessalonians, for they received the message with great eagerness and examined the Scriptures every day to see if these teachings were true.

2 Peter 3:18
But grow in the grace and knowledge of our Lord and Savior Jesus Christ. To Him be the glory both now and to the day of eternity. Amen.

the mouth

Proverbs 12:23
A shrewd man keeps his knowledge to himself, but a foolish heart proclaims its folly.

Isaiah 30:10
They say to the seers, "No more visions, " and to the prophets, "Do not prophesy to us the truth. Speak to us pleasant words; prophesy illusions.

Isaiah 44:20
He feeds on ashes. His deluded heart has led him astray, and he cannot deliver himself or say, "Is not this thing in my right hand a lie?"

Hosea 12:1
Ephraim chases the wind and pursues the east wind all day long; he multiplies lies and violence; he makes a covenant with Assyria and sends olive oil to Egypt.