Well i've got a sneaking suspicion that it's not for non-muslims..
[Koran 5.51] "O you who believe! do not take the Jews and the Christians for friends"
[Koran 9.123] "O you who believe! fight those of the unbelievers who are near to you and let them find in you hardness"
Your "Koran" is not translated properly. The Arabic word used in 5:51 is "Awliya". This means "protectors or allies". NOT "friends". You are also quoting out of context. Showing what you want to show and hiding what you want hide.
Statement: You should punish all Christians who molest children.
Out of Context: You should punish all Christians.
See how that's cheating? See how easy it is to twist meanings by taking words out of context?
Now let's see what the Quran REALLY says about violence towards Christians, Jews, nonbelievers, etc.
Violence is permitted in the Quran under 3 conditions. I aim to show here that ISIS & other such groups are in complete violation of Quranic law.
Establishing the 3 conditions under which violence is permitted according to the Quran:
I'm using Adel Haleem's translation. It's well written, NOT funded by Saudi Arabia or those aiming to deceive & doesn't have a bias towards any particular sect. Feel free to check the verses with any translation that you trust.
Condition #1: SELF DEFENSE
First, here is the famous "kill them where you find them" verse:
4:89 They would dearly like you to reject faith, as they themselves have done, to be like them. So do not take them as allies until they migrate [to Medina] for Gods cause. If they turn [on you], then seize and kill them wherever you encounter them. Take none of them as an ally or supporter.
The very next verse, 4:90 establishes the conditions for 4:89:
4:90 EXCEPT those who take refuge with a people allied to you, or those who, weary of fighting you or their people, come over to you. If God had so willed He would surely have given them power over you, and they would have fought you. If they keep aloof and do not fight, and offer peace, GOD HAS LEFT YOU NO REASON TO FIGHT THEM.
The word "Except" immediately rules out the possibility that it's encouraged to kill nonbelievers under all or any circumstances. There are limitations. The limitations in this verse are those allied with you (e.g. Peace Treaty, etc) or those who do not fight you and offer peace instead. If that's the case, then as the last line states, "God has left you no reason to fight them". In other words a REASON is needed. In this case, that reason is clearly SELF-DEFENSE.
Condition #2: IF THEY FIGHT YOU OVER YOUR FAITH
Condition #3: IF THEY DRIVE YOU OUT OF YOUR HOMES
Verses 60:8 & 60:9 show these 2 conditions and clear up any misconceptions as to when it's ok to befriend nonbelievers & when you should fight them.
60:8 and He does not forbid you to deal kindly and justly with anyone who has not fought you for your faith or driven you out of your homes: God loves the just.
60:9 BUT God forbids you to take as allies those who have fought against you FOR YOUR FAITH, DRIVEN YOU OUT OF YOUR HOMES, and helped others to drive you out: any of you who take them as allies will truly be wrongdoers.
These two verses as you can see are pretty clear. If they're fighting you because of your faith (what ISIS are doing to non-Sunni's right now) or kicking you out of your homes (Israel to Palestine), then you can fight them and must not take them as allies. If however, they aren't doing any of those things, deal kindly with them. It's quite simple and fair in my opinion.
So to say that ISIS is following Quranic law, is completely false. They are actually being aggressors and persecuting, which violates the Quran.
Let's look at the other "Kill them" verse and see if it's conditional:
2:191 Kill them wherever you encounter them, and drive them out from where they DROVE YOU OUT, for PERSECUTION is more serious than killing. Do not fight them at the Sacred Mosque unless they fight you there. If they do fight you, kill them- this is what SUCH disbelievers deserve-
As you can see, this is not a general statement for all disbelievers. It's referring to a group who drove you out of your homes first! And they persecuted you. Which God says is worse than killing. And this is what SUCH disbelievers deserve. Not ALL. Only the ones persecuting you and kicking you out of your homes.
In closing, the violent verses in Quran are directed at the "bad guys". Not at normal people or those from other faiths that haven't harmed you, attacked you or oppressed you. Peace!