Proverbs 10:19

10:19 When words abound, transgression is inevitable,

but the one who restrains his words is wise.

Proverbs 13:16

13:16 Every shrewd person acts with knowledge,

but a fool displays his folly.

Proverbs 29:11

29:11 A fool lets fly with all his temper,

but a wise person keeps it back.

Proverbs 29:20

29:20 Do you see someone who is hasty in his words?

There is more hope for a fool than for him.

Ecclesiastes 10:12-14

Words and Works of Wise Men and Fools

10:12 The words of a wise person win him favor,

but the words of a fool are self-destructive.

10:13 At the beginning his words are foolish

and at the end his talk is wicked madness,

10:14 yet a fool keeps on babbling.

No one knows what will happen;

who can tell him what will happen in the future?

Matthew 12:34

12:34 Offspring of vipers! How are you able to say anything good, since you are evil? For the mouth speaks from what fills the heart.

Titus 1:10-11

1:10 For there are many rebellious people, idle talkers, and deceivers, especially those with Jewish connections, 1:11 who must be silenced because they mislead whole families by teaching for dishonest gain what ought not to be taught.

James 3:6-8

3:6 And the tongue is a fire! The tongue represents the world of wrongdoing among the parts of our bodies. It pollutes the entire body and sets fire to the course of human existence – and is set on fire by hell.

3:7 For every kind of animal, bird, reptile, and sea creature is subdued and has been subdued by humankind. 3:8 But no human being can subdue the tongue; it is a restless evil, full of deadly poison.

James 3:2

3:2 For we all stumble in many ways. If someone does not stumble in what he says, he is a perfect individual, able to control the entire body as well.

James 2:18

2:18 But someone will say, “You have faith and I have works.” Show me your faith without works and I will show you faith by my works.