Hierophant resembles experience, or someone who has been through a lot.
Y'know someone who can "say it through experience" or "seen it before." Or someone that is just wise.
Normally this tarot is assosiated by an elder or older person, ie. Your grandma, uncle, big brother, mom, teacher, pastor, ect.
In p3 it is resembled by the old couple in the bookstore and in p4 it is dojima, your uncle
Real spoilers ahead
Also roo, pro tip:
Try to max out your links with nanako and dojima asap
And focus on working with tarots you find yourself using more, ie. I often find myself using Chariot, Moon, temperance, and Death
Also try maxing out links with your most used party members.
And if you are playing p4g don't forget about Marie! You can work on Adachi's on your second playthrough.
And p3 is kinda fucking hard, you might not be able to beat the game on your first play though...
Don't be afriad of grinding or overleveling