Matthew 12:35-37
a good man out of the good treasure produces good things: and an evil man, out of the evil treasure, produces evil things.
Hebrews 4:12-13
for the word of God is active and efficacious, sharper than any two-edged sword, penetrating even to the division of soul and spirit, to the smallest and most inward parts, distinguishing the thoughts, and intentions of the heart.
James 1:26
If a person of an ungovernable tongue pretends to religion, he abuses himself: for his religion is meer illusion.
James 3:2-10
for we are all liable to frequent mistakes. he that does not give too great a loose to his tongue, is an accomplish'd person and fit to moderate the whole church.