heart

Proverbs 15:28
The heart of the righteous ponders how to answer, but the mouth of the wicked blurts out evil.

Proverbs 22:17, 18
Incline your ear and hear the words of the wise--apply your mind to my knowledge-- . . .

Psalm 37:30, 31
The mouth of the righteous man utters wisdom, and his tongue speaks justice. . . .

Psalm 45:1
My heart is stirred by a noble theme as I recite my verses to the king; my tongue is the pen of a skillful writer.

Matthew 12:34, 35
You brood of vipers, how can you who are evil say anything good? For out of the overflow of the heart, the mouth speaks. . . .

Colossians 3:16
Let the word of Christ richly dwell within you as you teach and admonish one another with all wisdom, and as you sing psalms, hymns, and spiritual songs with gratitude in your hearts to God.