Proverbs 10:20

The tongue of the righteous is chosen silver, The heart of the wicked -- as a little thing.

Proverbs 12:18

A rash speaker is like piercings of a sword, And the tongue of the wise is healing.

Genesis 6:5

And Jehovah seeth that abundant is the wickedness of man in the earth, and every imagination of the thoughts of his heart only evil all the day;

Genesis 8:21

and Jehovah smelleth the sweet fragrance, and Jehovah saith unto His heart, 'I continue not to disesteem any more the ground because of man, though the imagination of the heart of man is evil from his youth; and I continue not to smite any more all living, as I have done;

Proverbs 8:19

Better is my fruit than gold, even fine gold, And mine increase than choice silver.

Proverbs 15:4

A healed tongue is a tree of life, And perverseness in it -- a breach in the spirit.

Proverbs 16:13

The delight of kings are righteous lips, And whoso is speaking uprightly he loveth,

Proverbs 23:7

For as he hath thought in his soul, so is he, 'Eat and drink,' saith he to thee, And his heart is not with thee.

Proverbs 25:11-12

Apples of gold in imagery of silver, Is the word spoken at its fit times.

Jeremiah 17:9

Crooked is the heart above all things, And it is incurable -- who doth know it?

Matthew 12:34-35

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.

Treasury of Scripture Knowledge

Summary

The tongue of the just is as choice silver: the heart of the wicked is little worth.

General references

Bible References

Tongue

Proverbs 12:18
A rash speaker is like piercings of a sword, And the tongue of the wise is healing.
Proverbs 15:4
A healed tongue is a tree of life, And perverseness in it -- a breach in the spirit.
Proverbs 16:13
The delight of kings are righteous lips, And whoso is speaking uprightly he loveth,
Proverbs 25:11
Apples of gold in imagery of silver, Is the word spoken at its fit times.
Matthew 12:35
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.

General references

Proverbs 8:10
Receive my instruction, and not silver, And knowledge rather than choice gold.