> And even in the religions were it was asked to not kill other fellow humans, well fellow humans have been killed in the name of...

If you mean the Templars and their Jerusalem crusades, it's likely that they were adhering another religion (or no religion) and using Christianity as a guise.

From the Wikipedia page for Baphomet (a famous occult symbol that is a god-like figure depicted as half man half animal; similar to ancient Egyptian gods such as Anubis), "The name first emerged in the 14th century during the Trials of the Knights Templar, when the order was accused of heresy for worshipping Baphomet as a demonic idol." This is just one of the bizarre activities that the Templars appeared to have participated in. Other witchcraft and occult ideas can be found on many of the churches that the Templars have founded including the Notre Dame. When looking through all the works of the Templars, it's just incredibly hard for to make a case that they have read or adhered to any part of the Bible. Maybe some things in letter, but definitely not in spirit. (For example, Matthew 22, "Master, which is the great commandment in the law? Jesus said unto him, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind. This is the first and great commandment. And the second is like unto it, Thou shalt love thy neighbour as thyself. On these two commandments hang all the law and the prophets.")