"Justified" by our perception of justified? God's perception of justified? Does he damn those that, in all honesty, had every right to take revenge?[
There's no answer that doesn't sound lame, but I'll answer as best as I can. Murder and vigilante justice is legally wrong in America, and to try and go outside the law to exact justice is violation of the law of our land. Is it ethically and morally justifiable? Yes. However, our legal system dictates punishments for those caught in criminal acts, and generally they do a good job of a fair and just punishment being given. So really, to go outside our established system of justice, however justifiable, is still a sin being that it doesn't come between us and God. However, sin can be forgiven, so no, just because one takes revenge one isn't automatically damned.
Does that make sense? This is a tricky and dense subject, and I'm really only skimming the surface here. If you want me to expound just pick some points and let me know, I know this isn't an exhaustive answer.
All these laws. So confused again. Mosaic, Levitical, Hebrew......You would've hoped there was just one base set forever and ever.
There is now; love your neighbor, and love God
But I'll give you a quick breakdown of those laws:
Mosaic - The Law of Moses, the Torah. This was God's revelation to Israel through Moses. The Levitical/Hebrew law is all part of this overarching body of legislation.
Levitical - Laws pertaining specifically to the Levites, one of the tribes of Israel who's duty was to guard and oversee the Tabernacle/Temple and to perform the sacrifices. Why? They were the first folks to come to Moses and repent of their worshiping the Golden Calf.
Hebrew National Law - All of the legal codes pertaining to normal Hebrew life; penal codes, dietary restrictions, monetary legislation, etc.
Why are they no longer in effect?
The Levitical law is no longer needed because the Levite order of priests is no more. Why? Because Christ dwells within us and is accessible to all of us, without the need for a literal temple and priest.
Mosaic/Hebrew - The ritual/sacrificial law here is totally fulfilled by Christ - only the moral law remains, and Christ broke that down to the two commandments of love. The Hebrew national law I don't have a super answer for, other than it's just simply not in effect anymore. You might want to consult a Jewish source on that.
However, I wouldn't disregard the Hebrew/Levitical Law as a dead or unimportant thing...there is a LOT to be found in there. I recommend reading a Bible with some good commentary in the Penateuch; seriously, it's amazing how much of Christ and the New Covenant you see in there once you really start looking. Here's a couple resources I use:
http://christianthinktank.com/ - amazing site. specifically, this part :
http://christianthinktank.com/finaltorah.html
English Standard Version (ESV) - Biblia.com - you have to register but it's easy, just an email and pw, they don't even send a confirmation email, and you have access to over 70 Bible translations and 50+ commentaries
http://www.amazon.com/Apologetics-Study-Bible-Understand-Believe/dp/158640024X - it sounds corny, but the commentary in this Bible has brought the OT to life for me. I highly recommend this Bible, and it's not uber expensive.
The reason for this is because Christianity *must* be seen in light of Judaism, it's parent religion. I'm rambling and a bit off topic here, but I think it's an important note. Christianity was a religion that didn't just pop up out of nowhere but came about as a a fulfilled Judaism; hence the term Judeo-Christianity. I don't think it's fair or safe to see Christianity as devoid of any Hebrew influences, as it came from a Jew (Jesus) was given to Jews and related to Jews. To try and see Christianity as a random bubble in the midst of Judaism just isn't right; Christianity needs to be seen in context of the story of the Hebrew people.