It is treated as the BIGGEST benefice - planet BUT remember....
Jupiter in matters of relationship is NOT so great . It is said to have thrust himself on the WIFE of his elder brother who was pregnant and was kicked by the child in the womb .
In MATTERS relationship with CHILD & having undesirable unions - keep an eye on the placement of Jupiter.
Jupiter is the ADVISOR to INDRA ( we also have Indras today ) & spends most of the time in his duties neglecting HOME .Jupiters wife had relatioships with MOON.
Jupiter is the STORE of wisdom & strategy BUT these themes cannot be ignored especially when it ifluences a planet as Nakshatra Lord or its principal diety ( Pushya Nakshatra as an example).
It gives to the house that it is aspecting THE WISDOM & RULES that will be appropriate / as per DHARMA
The same may not be the case for the house it is placed.
One has to look at the Nakshatra, placement, aspect & conjunctions also.
JUPITER - MOON conjunction gives rise to GAJKESARI yoga. It is good for wealth/name if other astrological conditions satisfied BUT my experience is that it will BRING about some kind of SCANDAL.
RANDOM PRINCIPLES FROM EXPERIENCE - TRY /RESEARCH.