Oceans of Ink

The Bais Hamikdash is not being rebuilt because of the sin of Loshon Hara.  If all of the oceans in the world were ink, and all of the heavens were parchment we could not fully describe the sins of Loshon Hara.

from a Shiur by Rabbi Zev Leff about the root causes of Loshon Hara.