Romans 7:14

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

Ephesians 4:29

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. {to...: or, to edify profitably}

Matthew 12:34-35

O generation of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart the mouth speaketh.

Psalms 37:30

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

Romans 7:12

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

Psalms 119:142

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

Psalms 119:138

Thy testimonies {that} thou hast commanded {are} righteous and very faithful. {righteous: Heb. righteousness} {faithful: Heb. faithfulness}

Psalms 40:9-10

I have preached righteousness in the great congregation: lo, I have not refrained my lips, O LORD, thou knowest.