Luke 4:22
And they all bare witness to Him, and wondered at the gracefulness of the words, which proceeded from his mouth, and said, Is not this the son of Joseph?
Matthew 12:35
A good man out of the good treasure of the heart produceth good things; and a wicked man out of the wicked treasure uttereth wicked things:
Luke 19:22
But he said to him, Out of thy own mouth will I judge thee, thou wicked servant, Thou knewest that I am an austere man, taking up what I laid not down, and reaping what I did not sow;
Ephesians 4:29
Let no corrupt word come out of your mouth; but what is good to useful edification, that it may benefit the hearers.
Colossians 4:6
Let your speech be always with grace, seasoned with discretion to know how ye ought to answer every one.