The god of Christianity, Jew and Islam, is name Yahweh, which himself is an ancient pagan god. In pagan faith, in ancient pagan faith, Yahweh is a warrior god and a direct servant of Elyon, the king of god (later become known as Zues in greek mythology), Yahweh have a bad blood with the goddess of fertility and mother of life giver Ishtar, because Ishtar refuse to marry Yahweh, who is rude and abusive and marry the kind Tammauz god of agriculture. It is said Ishtar was the most beautiful woman of the land, but she got the snake tail, rather then legs. As revenge Yahweh send a giant flood to kill Ishtar's children, so, Ishtar block the flood and as revenge, killed Yahweh's son, which in Christianity will become known as Adam and Eve. In later Israel, for some reason, worshiping of gods other then Yahweh became outlaw and eventually Yahweh became the only god and Yahweh got credit for work and powers of all other gods, this became Jewish faith, Christianity and Islam. Its important to note, all religion origin from Africa, when the first human left Africa, they took their mythological believe with them to Asia, Middle East, Europe and America and in different places the mythology evolve independently, but all pagan faith got a common root. For example, Ishtar became Newa in China, in Europe she became the greek goddess of love aphrodite. In Christianity, she became the demon lilith who refuse to obey Yahweh.
Interesting is, despite Christianity preach love, Yahweh isn't a loving god, but a tyrant that demand people to worship, subject and serve his will, which is why the bible teach many evil things, even in the new testimate, the old testimate is even worse. Ishtar is the goddess who is truly loving and tolerating. It is said Yahweh would rule for 1000 years and hold tyrant rule over the world, till Ishtar return and drive Yahweh away and send her 2 sons as preachers to help heal the land. This story become the story of apocalypse of Christianity, in the bible it say the world is evil because it doesn't follow Yahweh's will, so Yahweh want to rule the world and force the world to follow Yahweh's will or be punish, Satan (Satan is the combination of all other gods that is not subject to Yahweh, including Lucifer, in this instant, the Satan here is Ishatar)) refuse to allow Yahweh to hold such power over menkind battled Yahweh, till Yahweh seal Satan (Ishtar) away and rule for 1000 years, then the world turn good because it now follow Yahweh's will, but then Satan (Ishtar) broke the seal and drove Yahweh away and send the 1st and 2nd beast of anti christ to preach teaching independent from Yahweh's will, so the world don't follow Yahweh's will anymore, thus the world is evil again.
This picture with this answer is a painting from China portraying Ishtar using a giant stone to stop the flood send by Yahweh, see she got the body if an extremely beautiful woman and the tail of a snake rather then legs