Proverbs 10:20
The tongue of the just is as choice silver; the heart of the wicked is worth little.
Proverbs 12:18
There are those who speak like the thrusts of a sword, but the tongue of the wise heals.
Genesis 6:5
And Jehovah saw that the wickedness of man was great in the earth, and every imagination of the thoughts of his heart was only evil continually.
Genesis 8:21
And Jehovah smelled a sweet odor. And Jehovah said in His heart, I will never again curse the ground for man's sake, because the imagination of man's heart is evil from his youth. And I will not again smite every living thing as I have done.
Proverbs 8:19
My fruit is better than gold, yea, than fine gold; and what I give is better than choice silver.
Proverbs 15:4
A wholesome tongue is a tree of life, but crookedness in it is a break in the spirit.
Proverbs 16:13
Righteous lips are the delight of kings, and they love him who speaks right.
Proverbs 23:7
for as he thinks in his heart, so is he; Eat and drink, he says to you, but his heart is not with you.
Proverbs 25:11-12
A word fitly spoken is like apples of gold in pictures of silver.
Jeremiah 17:9
The heart is deceitful above all things, and desperately wicked; who can know it?
Matthew 12:34-35
Offspring of vipers! How can you, being evil, speak good things? For out of the abundance of the heart the mouth speaks.