That you posted this in the "Religious Texts" forum tells me that you must be referring to
Hebrews 10:30, but the question is why?
Are you looking for reassurance that revenge (i.e. trying to
effect justice by your own hand) is justified?
I'm not by any stretch a Biblical scholar, but I seriously doubt you'll find justification for personal vengeance in the
Scriptures.
Similarly, I lack a legal background, but conventional wisdom seems to point me toward assuming that revenge is generally not sanctioned by civil authorities as well.
Even if it were, how would wreaking revenge toward those who have wronged you help your situation in the long run? It might not even make you "feel" any better! Hence, the expression, "Revenge is a dish that is better served cold."
I am not, nevertheless, dismissing your statement that you might be a victim of some sort of abuse. If so, if I were you, I would
not take matters in my own hands.
If you are a student, seek out a counselor, teacher, or administrator (principal) and talk to him or her. If school has already been dismissed for the summer, then find a clergyman, even if you aren't a regular church goer.
If you are in immediate danger, call 911 or whatever the emergency number is in your area.
Get Help.