Proverbs 2:2

2:2 by making your ear attentive to wisdom,

and by turning your heart to understanding,

Proverbs 8:5

8:5 You who are naive, discern wisdom!

And you fools, understand discernment!

Proverbs 16:1

16:1 The intentions of the heart belong to a man,

but the answer of the tongue comes from the Lord.

Proverbs 20:9

20:9 Who can say, “I have kept my heart clean;

I am pure from my sin”?

Proverbs 23:12

23:12 Apply your heart to instruction

and your ears to the words of knowledge.

Proverbs 23:33

23:33 Your eyes will see strange things,

and your mind will speak perverse things.