Proverbs 25:18

18 Like a club or a sword or a sharp arrow is one who gives false testimony against a neighbor.

Read Proverbs 25:18 Using Other Translations

A man that beareth false witness against his neighbour is a maul, and a sword, and a sharp arrow.
A man who bears false witness against his neighbor is like a war club, or a sword, or a sharp arrow.
Telling lies about others is as harmful as hitting them with an ax, wounding them with a sword, or shooting them with a sharp arrow.