Matthew 12:35-37
A good man out of the good treasure bringeth forth good things: and an evil man out of the evil treasure bringeth forth evil things.
Hebrews 4:12-13
For the word of God is living and powerful, and sharper than any two edged sword, piercing even to the dividing asunder both of the soul and spirit, both of the joints and marrow, and is a discerner of the thoughts and intents of the heart.
James 1:26
If any one be ever so religious, and bridleth not his tongue, but deceiveth his own heart, this man's religion is vain.
James 3:2-10
For in many things we offend all. If any one offend not in word, the same is a perfect man, able also to bridle the whole body.