Jupiter is the most benefic planet and it represents all the auspicious things like Knowledge, Wisdom, Law, Guru, Spirituality, Religion, Philosophy, Literature, Elderly People. For a girl, Jupiter also represents Husband.
8th house is house of secrecy, occult knowledge, death, transformation, death and re-birth, In laws family, joint wealth with spouse etc.
So, obviously it makes a great position for someone who wants to become an occult practitioner, as Jupiter is knowledge and 8th house is house of Secrecy and Occult but for that to be manifested, Jupiter/Mercury needs to be an Amatya Karaka and person should go through these Mahadashas. Besides that it is also house of in-laws and assets of in-laws and as Jupiter represents expansion of things, this person can have huge property and wealth from in-laws. Now, a real unique thing. 8th house is serving the needs of other people and Jupiter is Religion and Spirituality. So, this placement can make a person a kind of Spiritual Healer to others.
From 8th house, Jupiter aspects the 12th house of Spirituality, Charity and Donations etc. This aspect can make a person very charitable and spiritual. It can be up to the level of being compulsive for charity.
Jupiter's next aspect goes to 2nd house of family and wealth. Here Jupiter blesses the person with a spiritual and religious family and provides lots of wealth. There speech becomes very spiritual and wise.
Jupiter's last aspect goes to 4th house of mother and home. It provides them a very spiritual and religious mother. It also gives them a big home.
Hope this helps. Tomorrow - Jupiter in 9th house.
Vishal S Saxena - Astrologer