Proverbs 10:20
An innocent tongue is a noble treasure; but the heart of the ungodly is nothing worth.
Proverbs 12:18
A slanderous person pricketh like a sword; but a wise man's tongue is wholesome.
Genesis 6:5
And when the LORD saw that the wickedness of man was increased upon the earth, and that all the imagination and thoughts of his heart was only evil continually,
Genesis 8:21
And the LORD smelled a sweet savour and said in his heart, "I will henceforth no more curse the earth for man's sake, for the imagination of man's heart is evil even from the very youth of him. Moreover I will not destroy from henceforth all that liveth as I have done.
Proverbs 8:19
My fruit is better than gold, and precious stones, and mine increase more worth than fine silver.
Proverbs 15:4
A wholesome tongue is a tree of life; but he that abuseth it, hath a broken mind.
Proverbs 16:13
Righteous lips are pleasant unto kings; and they love him that speaketh the truth.
Proverbs 23:7
for he doth as a man that pescribeth a measure in his heart. He sayeth unto thee, "Eat and drink," whereas his heart is not with thee.
Proverbs 25:11-12
A word spoken in due season, is like apples of gold in a silver dish.
Jeremiah 17:9
Among all things living, man hath the most deceitful and unsearchable heart. Who shall then know it?
Matthew 12:34-35
O generation of vipers, how can ye say well, when ye yourselves are evil? For of the abundance of the heart, the mouth speaketh.