The Bible cannot be used to justify terrorism, but the Koran can be used this way (faithful to original intent).
It should also be remembered that there is a Koranic principle that the later revelations trump the earlier ones. When Muhammad was starting out and things were OK between him and Jews/Christians, there is a peaceful tone. When he moved to another city and had issues with Judeo-Christianity, his new revelation allowed them to be taxed, converted, or killed. This later stuff is what Islam is now under and it is not peaceful like the early days. Without knowing this, one can quote the early stuff and assume it shows a peaceful religion, but the reality is that the new as replaced the old leaving us with centuries of violent Islam and a small period of peaceful in the early days.
The fact that most Muslims are not living consistent with Muhammad or the Koran should not be a defense for a supposedly peaceful religion. Christians have always been mandated to peace, consistent with their founder and holy book (opposite to Islam who are now living inconsistent with founder/book, except the radical terrorists who are probably going to far even by Koranic standards; Christians who kill in the name of Christianity are likely not true evangelical Christians and are living contrary to their faith, not consistent with it).
If they were truly peaceful, there would be much more outcry from Muslims around the world against terrorism. The reality is that few condemn it and continue to say U.S., Israel/Jew, Christian is the evil enemy. Christians rightfully condemn any supposed Christian who kills, uses terrorism, kills abortionists, etc.