Psalms 119:172

Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers.

For we know that the law is spiritual: but I am carnal, sold under sin.

O generation of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart the mouth speaketh. A good man out of the good treasure of the heart bringeth forth good things: and an evil man out of the evil treasure bringeth forth evil things.

The mouth of the righteous speaketh wisdom, and his tongue talketh of judgment.

Wherefore the law is holy, and the commandment holy, and just, and good.

Thy testimonies that thou hast commanded are righteous and very faithful.

Thy righteousness is an everlasting righteousness, and thy law is the truth.

Let your speech be alway with grace, seasoned with salt, that ye may know how ye ought to answer every man.

With my lips have I declared all the judgments of thy mouth.

All thy commandments are faithful: they persecute me wrongfully; help thou me.

I have preached righteousness in the great congregation: lo, I have not refrained my lips, O Lord, thou knowest. I have not hid thy righteousness within my heart; I have declared thy faithfulness and thy salvation: I have not concealed thy lovingkindness and thy truth from the great congregation.

And thou shalt teach them diligently unto thy children, and shalt talk of them when thou sittest in thine house, and when thou walkest by the way, and when thou liest down, and when thou risest up.

I will speak of thy testimonies also before kings, and will not be ashamed.

We will not hide them from their children, shewing to the generation to come the praises of the Lord, and his strength, and his wonderful works that he hath done.