Ephesians 4:22, 25, 31

that, regarding your previous way of life, you put off your old self [completely discard your former nature], which is being corrupted through deceitful desires

Therefore, rejecting all falsehood [whether lying, defrauding, telling half-truths, spreading rumors, any such as these], SPEAK TRUTH EACH ONE WITH HIS NEIGHBOR, for we are all parts of one another [and we are all parts of the body of Christ]. [Zech 8:16]

Let all bitterness and wrath and anger and clamor [perpetual animosity, resentment, strife, fault-finding] and slander be put away from you, along with every kind of malice [all spitefulness, verbal abuse, malevolence].