My lips shall not speak wickedness, nor my tongue utter deceit.

For our exhortation was not of deceit, nor of uncleanness, nor in guile: But as we were allowed of God to be put in trust with the gospel, even so we speak; not as pleasing men, but God, which trieth our hearts.

There is gold, and a multitude of rubies: but the lips of knowledge are a precious jewel.

I will fetch my knowledge from afar, and will ascribe righteousness to my Maker. For truly my words shall not be false: he that is perfect in knowledge is with thee.

The tongue of the wise useth knowledge aright: but the mouth of fools poureth out foolishness.

For my mouth shall speak truth; and wickedness is an abomination to my lips. All the words of my mouth are in righteousness; there is nothing froward or perverse in them.

The mouth of the righteous speaketh wisdom, and his tongue talketh of judgment. The law of his God is in his heart; none of his steps shall slide.

The lips of the wise disperse knowledge: but the heart of the foolish doeth not so.

Who is this that darkeneth counsel by words without knowledge?

Now therefore be content, look upon me; for it is evident unto you if I lie.

Should a wise man utter vain knowledge, and fill his belly with the east wind?