Proverbs 17:20
Nothing good comes to him whose heart is fixed on evil purposes: and he who has an evil tongue will come to trouble.
Psalm 18:26
He who is holy will see that you are holy; but to the man whose way is not straight you will be a hard judge.
Proverbs 3:32
For the wrong-hearted man is hated by the Lord, but he is a friend to the upright.
Proverbs 6:12-15
A good-for-nothing man is an evil-doer; he goes on his way causing trouble with false words;
Proverbs 8:13
The fear of the Lord is seen in hating evil: pride, a high opinion of oneself, the evil way, and the false tongue, are unpleasing to me.
Proverbs 10:10
He who makes signs with his eyes is a cause of trouble, but he who makes a man see his errors is a cause of peace.
Proverbs 10:14
Knowledge is stored up by the wise, but the mouth of the foolish man is a destruction which is near.
Proverbs 10:31
The mouth of the upright man is budding with wisdom, but the twisted tongue will be cut off.
Proverbs 18:6-7
A foolish man's lips are a cause of fighting, and his mouth makes him open to blows.
Ecclesiastes 10:12
The words of a wise man's mouth are sweet to all, but the lips of a foolish man are his destruction.
James 3:6-8
And the tongue is a fire; it is the power of evil placed in our bodies, making all the body unclean, putting the wheel of life on fire, and getting its fire from hell.