Proverbs 20:18-20

Amplified Bible

¹⁸ 
Plans are established by counsel;
So make war [only] with wise guidance.
¹⁹ 
He who goes about as a gossip reveals secrets;
Therefore do not associate with a gossip [who talks freely or flatters].^(A)
20 
Whoever curses his father or his mother,
His lamp [of life] will be extinguished in time of darkness.