"THE TENANTS OF THIS DEN OF INIQUITY"

[TOM4CWB]

"Used more solemnly, the expression "den of iniquity" implies a certain discernment that a morally upright person would consider intolerable.

There are several earlier (19th century) examples viewable on the Making of America websites, such as this one from an 1840 book by George E. Dabney: "The young men made their preparations with alacrity, and, headed by this western patriarch, we proceeded at a rapid gait to surprize the tenants of this den of iniquity."
http://en.wiktionary.org/wiki/den_of_iniquity

INTERESTING APPLICATION FROM HISTORY.

[TOM4CWB]

ALACRITY
noun
brisk and cheerful readiness.
"she accepted the invitation with alacrity"
synonyms: eagerness, willingness, readiness;