When I think of the book of Psalms, I usually imagine songs being sung and prayers being said. I think of it as a sort of intermission from some of the Old Testament’s more gruesome parts.
Apparently, I’m wrong. I noticed some rather barbaric verses in Psalms the other day, and decided to investigate further. The Skeptic’s Annotated Bible provides a complete list of cruel Psalms.
It is quite a long list.