This article is about Partnership. The Muslims call this shirk; it is called “shituf” in Hebrew.
We are not operating from a position of lack of information; in fact thanks to the Jews we are well-aware of various heresies that became extant throughout the history of Israel; one need only read the bible.
In particular however there are two late heresies that pertain to modern-day shituf. One that arose late, just prior to the codification of the Bible by Ezra after the Babylonian exile; this is the heresy of Baal worship. This was recorded in the bible in the stories of Elijah and others. Second is the heresy of Mithra worship, which arose at the end of the Greek empire when the Romans took over Judea. Both of these are related to the Zoroastrianism of Babylon; we may also examine certain greek heresies which are related.
Source: Mithra: The Pagan Christ (local copy)
Source: https://youtu.be/muM7Uk40iRE