Church of Satan
"Hail Satan" a common greeting and ritual term in the Church of Satan, both in its English form, "Hail Satan", as well as in the original Latin version of it, "Ave Satanas". When "Ave Satanas" is used, it is often preceded by the term "Rege Satanas" ("Reign, Satan"). ("Rege Satanas" can be heard in the video of a widely publicized Church of Satan wedding performed by LaVey on February 1, 1967.) The combination "Rege Satanas, Ave Satanas, Hail Satan!" is found as a greeting in early Church of Satan correspondence, as well as in their 1968 recording "The Satanic Mass", and ultimately in their 1969 book "The Satanic Bible". The phrase is used in some versions of the Black Mass, where it often accompanies the phrase Shemhamforash and is said at the end of each prayer. This rite was performed by the Church of Satan