When I started looking into Satanism I wanted to go back to the beginning to understand how we got to where we were. As far as Western religion is concerned, one must look no further than Judaism, the precursor of Christianity. It is 3000 years old and originated during the Bronze age. It is considered monotheistic (one God), but this wasn't always true. Judaism was created by the Semites. This label originates from one of Noah's three sons, named Shem.
According to the story, Moses was first contacted by the original "God" who was revealed as "YHWH", which is referred to as the tetragrammaton and pronounced as "Yahweh". Between the 6th and 10th century, traditionalist jews worked to replace the vowels of the name YHWH with the vowels of Hebrew words thus forming Elohim. Christian scholars who spoke Latin substituted the Y (which does not exist in Latin) with an I or a J. Thus, the tetragrammaton became the artificial Latinized name Jehovah (JeHoWaH).
The Old Testament is often times considered pretty hard core. It contains references to human sacrifice, purposeful plagues and floods and a lot of really bad Deities. Satan at this point has yet to be invented. He is a creation of time and the New Testament.
An ancient semitic god described as a god of "Sepharvaim" in the Book of Kings.
A lunar deity worshipped alongside Adrammelech. Also a semitic god. See above.
The Great Duke of Hell. Together with Beelzebub, and Lucifer he is part of the Evil Trinity. mentioned in the Hebrew Bible in the forms Ashtoreth. "Astaroth" as a male demon is first known from The Book of Abramelin, purportedly written in Hebrew c. 1458. This book describes
a system of magic which regained popularity in the 19th and 20th centuries due to its translation to English by Samuel Liddell MacGregor Mathers ; The Book of the Sacred Magic of Abramelin the Mage . Mathers is a cofounder of the Hermetic Order of the Golden Dawn which still exists today. The book is also important within Thelema (created in 1904 by Aleister Crowley).
Worshipped in many places but importantly in the Levant by the Canaanites. She represents fertility, sexuality, and war. She is frequently represented as nude and holding her breasts. A prehistoric pinup if you will.
A generic term used to signify "owner", or "lord" and frequently used in the Levant and found within the Hebrew Bible typically pointing to the god Hadad. As Hadad became increasingly important, it was felt his name could only be uttered by cult priests and he became commonly known only as Baal.
Belphegor was worshipped by the Moabites and is referenced in The Book of Numbers, the
fourth book of the Hebrew Bible (25:3) . He is associated with licentiousness and orgies. It
was worshipped in the form of a Phallus. He is also encountered within Kabbalah . When summoned, it can bring riches and ingenious ideas. The palindromic prime number 1000000000000066600000000000001 is known as Belphegor's Prime .
The Canaanite god of child sacrifice. Much is written about this Hebrew god so I plan to write an entire post about it. Suffice it to say, there is ample evidence that children were sacrificed to this god, commonly considered the god of weather. The form of sacrifice was typically by fire.