Proverbs 12:18There is that speaketh like the piercings of a sword: but the tongue of the wise is health.
Genesis 6:5And God saw that the wickedness of man was great in the earth, and that every imagination of the thoughts of his heart was only evil continually.
Genesis 8:21And the LORD smelled a sweet savour; and the LORD said in his heart, I will not again curse the ground any more for man's sake; for the imagination of man's heart is evil from his youth; neither will I again smite any more every thing living, as I have done.
Proverbs 8:19My fruit is better than gold, yea, than fine gold; and my revenue than choice silver.
Proverbs 15:4A wholesome tongue is a tree of life: but perverseness therein is a breach in the spirit.
Proverbs 16:13Righteous lips are the delight of kings; and they love him that speaketh right.
Proverbs 23:7For as he thinketh in his heart, so is he: Eat and drink, saith he to thee; but his heart is not with thee.
Proverbs 25:11-12A word fitly spoken is like apples of gold in pictures of silver. As an earring of gold, and an ornament of fine gold, so is a wise reprover upon an obedient ear.
Jeremiah 17:9The heart is deceitful above all things, and desperately wicked: who can know it?
Matthew 12:34-35O generation of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart the mouth speaketh. A good man out of the good treasure of the heart bringeth forth good things: and an evil man out of the evil treasure bringeth forth evil things.