Getting back to Genesis 3:15, I have a problem with the assignment of "the woman" as Jehovah's wife. That's because, generally speaking, we can understand the concept of the angelic population in heaven being like Jehovah's wife. But what about Satan? For "the woman" to be Jehovah's wife, you have to define that wife as just the faithful angels. But that leaves out who represents Satan and the 1/3rd rebel angels? Do they make another wife of Jehovah? The unfaithful wife? Since you have to exclude Satan and 1/3 of the angels from Jehovah's "wife" that woman being Jehovah's wife doesn't work for me.
Instead, again, I see this as establishing the enmity and division between Christ and his seed and Satan and his seed, only in the context of Eden, Satan is called "the woman" since she functioned as the wife of Christ in heaven up until now, and will be replaced by the 144,000 as Christ's new, but replacement wife.
This special connection between Christ and his wife and Mount Zion is reflected by the emblems in the Most Holy between the two covering cherubs whose wings cover the top of the ark. Satan is identified as one of these "covering cherubs" who had to be cast out of Mount Zion. Ezekiel 28:14:
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…13"You were in Eden, the garden of God; Every precious stone was your covering: The ruby, the topaz and the diamond; The beryl, the onyx and the jasper; The lapis lazuli, the turquoise and the emerald; And the gold, the workmanship of your settings and sockets, Was in you. On the day that you were created They were prepared. 14"You were the anointed CHERUB WHO COVERS, And I placed you there. You were on the holy mountain of God; You walked in the midst of the stones of fire. 15"You were blameless in your ways From the day you were created Until unrighteousness was found in you."
Satan is called the "cherub that covers." This is a reference to one of the two cherubs whose wing covers the top of the ark of the covenant, representing Mount Zion. We know these are not simply symbolic angels because on the curtains the images of the cherubs are alternating between a cherub with the face of a man, representing Jesus Christ and a palm tree figure, which is a feminine figure and thus the lesser angel.
Further, Christ is represented on the breastplate of the high priest by 12 stones. Satan by only nine stones; another indication that these are two specific angels in heaven with a special relationship in regards to God's holiness on Mount Zion, a position we note becomes that of Christ's bride.
So if the two cherubs in this special relationship is considered to be husband and wife, then we know Satan was the original wife of Jesus who sinned against him. In Eden, Satan became the "pattern" for Eve and the Tree of Knowledge. So when God pronounces: "I will put enmity between YOU and the WOMAN and between your seed and her seed" he is addressing Jesus Christ and noting that Satan will be cast out of Mount Zion and they would be allowed to oppose each other for a period of time, during which time Satan would bruise Christ in the heal by causing his death as a human, but Christ would crush the head of Satan, which is a fatal blow, when he casts Satan into the lake of fire after the 1000 year reign.
Now this is just background of why some have the interpretation that "the woman and her seed" represents Satan and his/her angelic followers. But having noted that, even Christian artwork frequently represents Satan as being a female, half woman and half snake. Thus the concept that Satan plays a feminine role persists in esoteric pagan and Christian tradition. Thus if we asked where did the concept that Satan was a snake and a woman come from, you can point to the Bible. Satan is depicted as both a woman and a snake in the Bible.