(19) And when you look up to the sky and behold the sun and the moon and the stars, the whole heavenly host, you must not be lured into bowing down to them or serving them. These the LORD your God allotted to other peoples everywhere under heaven;
One who was born under the influence of the sun will be a radiant person; he will eat from his own resources and drink from his own resources, and his secrets will be exposed. If he steals he will not succeed, because he will be like the sun that shines and is revealed to all.
One who was born under the influence of Venus will be a rich and promiscuous person. What is the reason for this? Because fire was born during the hour of Venus, he will be subject the fire of the evil inclination, which burns perpetually.
One who was born under the influence of Mercury will be an enlightened and expert man, because Mercury is the sun’s scribe, as it is closest to the sun.
One who was born under the influence of the moon will be a man who suffers pains, who builds and destroys, and destroys and builds. He will be a man who eats not from his own resources and drinks not from his own resources, and whose secrets are hidden. If he steals he will succeed, as he is like the moon that constantly changes form, whose light is not its own, and who is at times exposed and at times hidden.
One who was born under the influence of Saturn will be a man whose thoughts are for naught. And some say that everything that others think about him and plan to do to him is for naught.
One who was born under the influence of Jupiter [tzedek] will be a just person [tzadkan]. Rav Naḥman bar Yitzḥak said: And just in this context means just in the performance of mitzvot.
One who was born under the influence of Mars will be one who spills blood. Rav Ashi said: He will be either a blood letter, or a thief, or a slaughterer of animals, or a circumciser. Rabba said: I was born under the influence of Mars and I do not perform any of those activities. Abaye said: My Master also punishes and kills as a judge. It was stated that Rabbi Ḥanina says: A constellation makes one wise and a constellation makes one wealthy, and there is a constellation for the Jewish people that influences them. Rabbi Yoḥanan said: There is no constellation for the Jewish people that influences them. The Jewish people are not subject to the influence of astrology. And Rabbi Yoḥanan follows his own reasoning, as Rabbi Yoḥanan said: From where is it derived that there is no constellation for the Jewish people? As it is stated: “Thus said the Lord: Learn not the way of the nations, and be not dismayed at the signs of heaven; for the nations are dismayed at them” (Jeremiah 10:2). The nations will be dismayed by them, but not the Jewish people. And Rav also holds that there is no constellation for the Jewish people, as Rav Yehuda said that Rav said: From where is it derived that there is no constellation for the Jewish people? As it is stated with regard to Abraham: “And He brought him outside, and said: Look now toward heaven, and count the stars, if you are able to count them; and He said unto him: So shall your offspring be” (Genesis 15:5). The Sages derived from this that Abraham said before the Holy One, Blessed be He: Master of the Universe, “Behold, You have given me no offspring, and one born in my house is to be my heir” (Genesis 15:3). The Holy One, Blessed be He, said to him: No. “And, behold, the word of the Lord came to him, saying: This man shall not be your heir; rather, one that will come forth from your own innards shall be your heir” (Genesis 15:4). Abraham said before Him: Master of the Universe, I looked at my astrological map, and according to the configuration of my constellations I am not fit to have a son. The Holy One, Blessed be He, said to him: Emerge from your astrology, as the verse states: “And He brought him outside,” as there is no constellation for Israel. What is your thinking?
(א) שלא לכשף לעונן ולנחש. ובו י"ט סעיפים:
אין שואלין בחוזים בכוכבים ולא בגורלות: הגה משום שנאמר תמים תהיה עם ה' אלהיך (ב"י בשם תוספות דע"פ ובשם ספרי) וכ"ש דאסור לשאול בקוסמים ומנחשים ובמכשפים (פסקי מהרא"י סי' צ"ו):
One must not inquire of the astrologers and not consult lots.
Vestiges of Astrology in Jewish Folklore
In the Jewish religious literature of modern times there remain only vestiges of earlier astrological beliefs. On joyful occasions in individual and family life, Jews everywhere congratulate each other by saying mazzal tov ("good luck"). A successful person is popularly referred to as a bar-mazzal ("one of luck"), and a perennial failure is known as a ra-mazzal ("poor luck"; Yid., shlimazl; Aram., bish-gadda). It was customary in some parts to begin no new undertaking on Mondays or Wednesdays (Sh. Ar., YD 179:2, on the basis of the responsa of Naḥmanides, no. 242), since Mondays were ruled by the moon and nothing could be properly done on them, while Wednesdays were ruled by Mars, a hard patron. Another custom was to perform marriages only in the first half of the month while the moon was waxing (ibid.; Naḥmanides, responsum no. 282). R. Mordecai Jaffe explains the custom of fasting on the anniversary of a parent's death (Isserles to Sh. Ar., YD 402:12) as deriving from the belief that on that day the luck of the child is vulnerable. Until recently it was the custom in certain localities to prepare a bed (or table; see Isserles, ibid., 65:11) in a mother's room on the eve of her son's circumcision so that the child should enjoy good luck (ibid., 178:3).
https://www.jewishvirtuallibrary.org/astrology
Significance of Astrology in Judaism
In Judaism, Astrology is not regarded as “idol worship,” even though the generic name for “idol worship” is “Avodat Kochavim U’Mazalot,” Worship of the Stars and the Signs of the Zodiac.”
From the Jewish perspective, the stars are not unrelated to events on earth. It is not irrelevant whether one was born on Pesach, or Yom Kippur, or Lag Ba’Omer or on any particular day. Each day is special and has a unique imprint.
On the other hand, if an individual was born under the “sign” of Mars, the Talmud says that he will have a tendency to spill blood. This tendency can be realized in a number of very different ways, however, which are subject to an individual’s choice. In this case, options might be a soldier, a surgeon, a murderer, a “shochet,” a ritual slaughterer of animals, or a “mohel,” one who performs ritual circumcisions. These options correspond to a potential hero, a healer, one who violates the “image of G-d,” to those who do “holy work” of different types.
There is a principle, “Ayn Mazal L’Yisrael,” “Israel’s fate is not determined by the stars.” The Jew, raised in his People’s traditions and Torah values, feels the reality of “freedom of choice” in his bones. So deeply ingrained is this knowledge and feeling, that the Jew rarely has cause to think about astrological factors.
It is the belief that one cannot escape from the grip of the stars that distinguishes Astrology from “Worship of the Stars and Signs of the Zodiac.” It is always possible to define one’s fate, by choosing behavior which is guided by morality and integrity, within the parameters – intellectual and emotional, physical and spiritual – which a person is given to work with.
https://www.ou.org/holidays/significance-astrology-judaism/