Ephesians 4:29
No bad word must ever pass your lips, but only words that are good and suited to improve the occasion, so that they will be a blessing to those who hear them.
Matthew 12:35-37
A good man, out of the good he has accumulated, brings out things that are good, and a bad man, out of what he has accumulated that is bad, brings out things that are bad.
Colossians 4:6
Always put your message attractively, and yet pointedly, and be prepared to give every inquirer a fitting answer.
Titus 1:10-11
For there are many undisciplined people, who deceive themselves with their empty talk, especially those of the party of circumcision.
James 3:6-9
And the tongue is a fire, a world of wrong the tongue proves in our bodies, soiling the whole body and setting fire to the whole round of nature, and set on fire itself by hell.
Romans 10:14-15
But how are they to call upon him if they have not believed in him? And how are they to believe him if they have never heard him? And how are they to hear unless someone preaches to them?
2 Corinthians 2:16
to the one, a deathly, deadly odor, to the other a vital, life-giving one. Who is qualified for this task? I am!
2 Corinthians 11:15
So it is nothing strange if his servants also masquerade as servants of uprightness. But their doom will fit their actions.
2 Peter 2:18
They utter arrogant nonsense and use physical cravings to lure into immorality men who are just escaping from among those who live in error;