Psalms 15:3

15:3 He does not slander,

or do harm to others,

or insult his neighbor.

Psalms 50:20

50:20 You plot against your brother;

you slander your own brother.

Psalms 101:5

101:5 I will destroy anyone who slanders his neighbor in secret.

I will not tolerate anyone who has a cocky demeanor and an arrogant attitude.