Proverbs 27:5-6 (KJV)
Open rebuke is better than secret love. Faithful are the wounds of a friend; but the kisses of an enemy are deceitful.
Proverbs 24:23-26 (KJV)
These things also belong to the wise. It is not good to have respect of persons in judgment. He that saith unto the wicked, Thou are righteous; him shall the people curse, nations shall abhor him: But to them that rebuke him shall be delight, and a good blessing shall come upon them. Every man shall kiss his lips that giveth a right answer.
Proverbs 7:6-27 (KJV)
For at the window of my house I looked through my casement, And beheld among the simple ones, I discerned among the youths, a young man void of understanding, Passing through the street near her corner; and he went the way to her house, In the twilight, in the evening , in the black and dark night: And, behold, there met him a woman with the attire of an harlot, and subtil of heart. (She is loud and stubborn; her feet abide not in her house: Now is she without, now in the streets, and lieth in wait at every corner.) So she caught him, and kissed him, and with an impudent face said unto him, I have peace offerings with me; this day have I payed my vows. Therefore came I forth to meet thee, diligently to seek thy face, and I have found thee. I have decked my bed with coverings of tapestry, with carved works, with fine linen of Egypt. I have perfumed my bed with myrrh, aloes, and cinnamon. Come, let us take our fill of love until the morning: let us solace ourselves with loves. For the goodman is not at home, he is gone a long journey: He hath taken a bag of money with him, and will come home at the day appointed. With her much fair speech she caused him to yield, with the flattering of her lips she forced him. He goeth after her straightway, as an ox goeth to the slaughter, or as a fool to the correction of the stocks; Till a dart strike through his liver; as a bird hasteth to the snare, and knoweth not that it is for his life. Hearken unto me now therefore, O ye children, and attend to the words of my mouth. Let not thine heart decline to her ways, go not astray in her paths. For she hath cast down many wounded: yea, many strong men have been slain by her. Her house is the way to hell, going down to the chambers of death.
Proverbs 23:9 (ESV)
Do not speak in the hearing of a fool, for he will despise the good sense of your words.
Proverbs 31:8-9 (ESV)
Open your mouth for the mute, for the rights of all who are destitute. Open your mouth, judge righteously, defend the rights of the poor and needy.
Proverbs 19:11 (ESV)
A fool gives full vent to his spirit, but a wise man quietly holds it back.
Proverbs 15:1 (ESV)
A soft answer turns away wrath, but a harsh word stirs up anger.
Proverbs 25:15 (ESV)
With patience a ruler may be persuaded, and a soft tongue will break a bone.
Proverbs 12:18 (ESV)
There is one whose rash words are like sword thrusts, but the tongue of the wise brings healing.
Proverbs 15:4 (ESV)
A gentle tongue is a tree of life, but perverseness in it breaks the spirit.