And furthermore: six slices of bread from the book of Proverbs

Proverbs 10:19
When words are many, transgression is not lacking, but whoever restrains his lips is prudent.
Proverbs 13:3
Whoever guards his mouth preserves his life; he who opens wide his lips comes to ruin.
Proverbs 16:4
The LORD has made everything for its purpose, even the wicked for the day of trouble.
Proverbs 18:13
If one gives an answer before he hears, it is his folly and shame.
Proverbs 21:23
Whoever keeps his mouth and his tongue keeps himself out of trouble.
Proverbs 29:20
Do you see a man who is hasty in his words? There is more hope for a fool than for him.