What does the Church teach about gossip? How serious of a sin is it? Cosden and Fr. K break down what gossip is, how serious it is, and what we can do about it.

Here's a link to the book mentioned in the podcast, Sins of the Tongue by Fr. Belet: http://www.catholicapologetics.info/morality/general/btongue.htm

And here is Aquinas's treatise:

https://www.newadvent.org/summa/3073.htm