These are global energies of Jupiter in Cancer and 4th House that must be nuanced according to your birth chart, see the article Jupiter in signs; see also the article on the general interpretation of Jupiter.
The Jupiter planet is one of the attributes of the Animus in the chart, as such it can indicate a Projection of it.
It informs about the ideals, the philosophy of life, our capacities of expansion and perspective, it’s the faith and the morals, our optimism and our generosity.
Jupiter in Cancer : the establishment and protection of a clan
Jupiter is in the element of Water, with the Moon as its ruler, in exaltation, and it fully expresses its energies not only in an unhindered way, but also without being too excessive.
These people are very generous and charitable, as they are influenced by the aquatic values of sensitivity and intimacy. Very focused on the well-being of others, and in particular that of their close friends and family, they are very protective, and hope to create a sense of security in their social relationships; they seek out trustworthy relationships, and respect tradition and certain social conventions.
They seek to accumulate material goods in order to better protect themselves. They are “savers” when it comes to money, but they may also accumulate food, tending to assemble a few “reserves” out of greed.
Jupiter in Cancer people may be very connected to things that are larger than themselves, and are drawn to mysticism. They are very receptive, have a very highly-developed intuition and imagination, and are highly compassionate and naturally very understanding and empathetic, which are all things that create great opportunities in social situations for them if they are able to make the most of these qualities.
Jupiter in Cancer people also have a side of them that appreciates the comfort of their home. They are very much homebodies, and are very maternal, which goes a little bit against Jupiter’s spontaneous, outgoing nature; they tend to instinctively emotionally “retract” into a bubble which holds the people they love, and in particular their children.
Incidentally, the planet Jupiter represents children in traditional astrology, and when coupled with the sign of Cancer, which represents procreation, the result can be a prosperous, rich family, and these people may have many children.
They need their emotional and familial base to be extended and handed down to posterity. Jupiter in Cancer people grow and prosper through their emotions and by understanding and nurturing their roots in order to pass them down in turn. They truly have faith in these things : it’s what makes them feel safe and secure.
This may take the form of learning about their parents’ legacy, genealogical research, understanding familial karmic nodes, learning about traditions, or any sort of research on their origins, for example on their parents or their country. It could also be connected to an inheritance of money or property, and their home, whether it’s to be built or added on to, is important to them.
In terms of their excesses, these people tend first and foremost to be overly chauvinistic (too focused on their own clan at the expense of the rest of the world), too withdrawn—which is quite a paradox given that Jupiter is the planet of sociability—and too clingy with their loved ones; here too though, the planet is transcended, and it leads these people to be incredibly selfless and truly altruistic, and to feel things very deeply.
Jupiter retrograde in Cancer
Jupiter’s Retrograde motion can lead these people to be even more introverted and focused on themselves, and possibly more wary, less spontaneous, and less sociable, but they may collect and accumulate things even more.
Celebrities with Jupiter in Cancer
Kurt Cobain, Nelson Mandela, Steve Jobs, Coco Chanel, Krishnamurti, Harrison Ford, Bruce Willis, Heath Ledger, Jimi Hendrix, James Dean, Frida Kahlo, Janis Joplin, Warren Buffett…