The True Power of Speech

Lashon Hara (defined as slander) has the power to destroy marriages, friendships, and families. What happens when you speak Lashon Hara?

What constitutes Lashon Hara? Relating negative information about another person that is true, (if it is false, it is מוציא שם רע, slander).

The prohibition of listening to...and believing lashon hara.

Why do Chazal speak of Lashon Hara in such harsh terms, even more harsh than other forms of damage?

Shiur provided courtesy of torahthinking.com