By researching the Goddess Isis and Venus, one can discover a common thread to the more modern object of worship, the Virgin Mary.
Venus, born from the sea-foam, the love-goddess, whose symbols are myrtle, a dove, and her metal is copper. The divinity, who emerged from the sea can be also attributed to Mary, whose name come from Mare, meaning Ocean. There is also a Santerian version of her called Yemaya, who is symbolized by the Virgin Mary. Mary, among other names, is referred to as the Star of The Sea. You can imagine her as more of a symbolic representation of a primoridal spiritual element, water.
It seems that these two goddesses are diametrically opposed, but on further investigation they can be seen as very similar. There is also an Eastern goddess called Kuan-Yin, the boddhisatva of compassion, who is essentially the Virgin Mary of the orient. Modern devotees of certain religions may fear or oppose these similarites, but if one is open to new ideas, you can perceive all of them as one, none fully realized, but elements of a greater force that we as humans cannot fully grasp.
Even in the beginning of the Bible, it says God Moved on the face of the waters, indicating that that substance was already existent in nothingness. This could be indicative of a coupling or union with the male force being “God” joining with the female element of water. This could be a symbolic representation of sexual union which brings forth the creation of the world.
There is an excellent reference book called 777 by Aleister Crowley, who makes comparisons to many deities over all over the world to their respective plant, animal, metal, planetary correspondences.