Proverbs 24:26, 28-29

He kisses the lips [and wins the hearts of people] Who gives a right and straightforward answer.

¶Do not be a witness against your neighbor without cause, And do not deceive with your lips [speak neither lies nor half-truths]. [Eph 4:25] Do not say, “I will do to him as he has done to me; I will pay the man back for his deed.” [Prov 20:22; Matt 5:39, 44; Rom 12:17, 19]