Astrology and numerology play a huge role in the beliefs of Christianity just as they do in other religions. We see this in the Bible by its varied use of particular numbers. Here we will consider the number twelve. Robert Engelbach wrote:
“The number 12 is significant in Sumerian culture, which was the first to observe the 12 moon cycles throughout the year and to split up the Zodiac into 12 constellations, each representing a god. The Sumerians passed on the significance of 12 and the Zodiac to the Greeks, the Greeks to the Romans, and the Romans to the Western world.”
The Hindus have twelve Aditya and the Scandinavians twelve Aesirs of Asgard. Both Osiris and Marduk had twelve helpers. A Buddhist’s life is “composed of 12 stages.” Both Rome and Greece worshiped twelve gods, there were “12 adventures of Gilgamesh” and “12 labors of Hercules”; and Gnosticism had its “twelve governors.” Even the Egyptian “lakes of fire” were attended by twelve gods. There were, of course, twelve tribes of Israel (Jacob was the sun, his wife the moon, and his sons twelve stars, Gen. 37:5), and Jesus had twelve disciples. New Jerusalem has twelve foundations and a wall with twelve gates and twelve angels; and the woman in Revelation 12:1 has twelve stars in her crown (Gen. 25:16, 35:22, 49:28; Rev. 21:12, 14).
Carmen Turner–Schott wrote: “In the Jewish temple of Jerusalem it is believed that the twelve signs of the zodiac were inlaid in its floor. According to Josephus, stamps were even issued with the zodiac signs on them and they were representative of the twelve tribes of Israel.”
The “sun” (Jesus) is surrounded by twelve “stars” (disciples). Roger Viklund explained the use of the number twelve with regard to the disciples as follows:
“It might also be said that the Son of God had twelve companions, or disciples if you like, in the shape of the twelve zodiacal constellations which the sun passes on its journey in the sky. The Sun God Mithras is in most cases depicted together with the twelve signs of the Zodiac. The two equinoxes (vernal and autumnal) and the two solstices (summer and winter) form a cross in the circle of the zodiac (mentioned by Plato), and so the Sun God can be said to be fettered on this cross, as he must constantly follow the path of the cross. All these ideas are probably the basis of the corresponding Christian conceptions.”
The months of the year are twelve. The days are divided into twelve during the day and twelve at night. At the age of twelve, Jesus worked in his Father’s house (Lk. 2:41-49). This relates to the sun, noted by D. M. Murdock as follows: “In the solar mythos, the ‘age’ of 12 refers to the sun at high noon, the twelfth hour of the day when the ‘God Sun’ is doing his ‘heavenly father’s work’ in the ‘temple’ or ‘tabernacle’ of the ‘most high.'”
In Vedic hymns, the sun is referred to as the “son of the sky,” Lord, Savior, Redeemer, and Preserver of mankind. Heaven and earth were considered to be the “parents of all things” and were male and female divinities. (They had a domestic squabble and all hell broke loose, but they got back together for the sake of their son.)
It takes little effort to discover that the number twelve in the Bible relates to the Zodiac and the twelve months of the year. Revelation 21:18-20 leaves no doubt, as the description of the walls of the new Jerusalem presents all twelve birthstones of the months. Lloyd Graham listed these as follows: March, Jasper; April, Sapphire; May, Chalcedony; June, Emerald; July, Onyx; August, Carnelian; September, Chrysolite; October, Beryl; November, Topaz; December, Ruby; January, Garnet; and February, Amethyst. The traditional birthstones bear out this truth.
Pisces (the Fish, Ichthus–a symbol of Christianity) is the “Alpha and Omega, the beginning and the end, the first and the last” (Rev. 22:13). We pass through the waters to be born, and cross over the river at death to be resurrected or born again. Pisces is the end of the yearly cycle, but (in geometric or retrograde order) the beginning of the astrological age.
According to Engelbach,
“In numerology, the number 12 is related to Pisces. The (12th) Tarot card is The Hanged Man. It represents the completed cycle of experience and when an individual reincarnates as the number 12 they have completed a full cycle of experience and learned of the possibility of regeneration toward a higher consciousness.”
Thus, the “figure on Card 12 has made the ultimate surrender – to die on the cross of his own travails – yet he shines with the glory of divine understanding. He has sacrificed himself, but he emerges the victor.”
For further reading: Tina Rae Collins, PhD, The Judaeo-Christian Myth (New York: M. F. Sohn Publications, 2015).
Previous Note on this topic: Astrotheology: Precession of the Equinoxes
 Robert Engelbach, “On the Sacred Path with Gilgamesh and Enkidu,” spiritofthescripture.com, 29 Jan. 2015.  Carmen Turner-Schott, MSW, LISW, “The Shining Star of Bethlehem: Signs in the Sky,” About Astrology, astrology.about.com, n.d.  Roger Viklund, “The Jesus Parallels,” from The Jesus That Never Was, 2007.  D. M. Murdock, Christ in Egypt: The Horus-Jesus Connection (Seattle: Stellar House Publishing, 2009), 214.  Thomas W. Doane, Bible Myths and Their Parallels in Other Religions (The Truth Seeker, 1882), XXXIX.  Doane, XXXIX.  Lloyd M. Graham, Deceptions and Myths of the Bible (New York: Bell Publishing Company, 1979), 316.  Engelbach, “On the Sacred Path with Gilgamesh and Enkidu.”  Murdock, Christ in Egypt, 261, 277.  E. A. Wallis Budge, A Guide to the Egyptian Galleries (British Museum, 1909), 182. See also: Murdock, Christ in Egypt, 272.  Graham, 375.  “Birthstone,” wikipedia.org, 25 Jan. 2015.  Engelbach, “On the Sacred Path with Gilgamesh and Enkidu.”  Engelbach, “On the Sacred Path with Gilgamesh and Enkidu.”