Cross reference
Proverbs 16:23
23 The heart of the wise causeth his mouth to act wisely, And by his lips he increaseth learning,
Proverbs 15:28
28 The heart of the righteous meditateth to answer, And the mouth of the wicked uttereth evil things.
Matthew 12:34-35
34 `Brood of vipers! how are ye able to speak good things -- being evil? for out of the abundance of the heart doth the mouth speak.
35 The good man out of the good treasure of the heart doth put forth the good things, and the evil man out of the evil treasure doth put forth evil things.
Psalms 37:30-31
30 The mouth of the righteous uttereth wisdom, And his tongue speaketh judgment.
31 The law of his God `is' his heart, His steps do not slide.
Psalms 45:1
1 To the Overseer. -- `On the Lilies.' -- By sons of Korah. -- An Instruction. -- A song of loves. My heart hath indited a good thing, I am telling my works to a king, My tongue `is' the pen of a speedy writer.
Proverbs 22:17-18
17 Incline thine ear, and hear words of the wise, And thy heart set to my knowledge,
18 For they are pleasant when thou dost keep them in thy heart, They are prepared together for thy lips.
Colossians 3:16
16 Let the word of Christ dwell in you richly, in all wisdom, teaching and admonishing each other, in psalms, and hymns, and spiritual songs, in grace singing in your hearts to the Lord;