Yes, Ajax, there is a lot of violence in the old testament but unless you are a Moabite, a Hittite, or whatever, you have nothing to worry about. There are no current commands to kill anybody. In Islam the commands to kill (or beat your wife) are current and have never been abrogated.
All good Muslims must fight:
Qur'an (2:216) - "Fighting is prescribed for you, and ye dislike it. But it is possible that ye dislike a thing which is good for you, and that ye love a thing which is bad for you. But Allah knoweth, and ye know not."
Qur'an (9:38-39) - "O ye who believe! what is the matter with you, that, when ye are asked to go forth in the cause of Allah, ye cling heavily to the earth? Do ye prefer the life of this world to the Hereafter? But little is the comfort of this life, as compared with the Hereafter. Unless ye go forth, He will punish you with a grievous penalty, and put others in your place."
Muslims who do not fight or make friends with Unbelievers are considered as low as Unbelievers themselves:
Qur'an (5:51) - "O you who believe! do not take the Jews and the Christians for friends; they are friends of each other; and whoever amongst you takes them for a friend, then surely he is one of them; surely Allah does not guide the unjust people."
Qur'an (4:89) - "They but wish that ye should reject Faith, as they do, and thus be on the same footing (as they): But take not friends from their ranks until they flee in the way of Allah (From what is forbidden). But if they turn renegades, seize them and slay them wherever ye find them; and (in any case) take no friends or helpers from their ranks."
Why terrorism is allowed as a tactic in Islam:
Qur'an (8:12) - "I will cast terror into the hearts of those who disbelieve. Therefore strike off their heads and strike off every fingertip of them"
Qur'an (3:151) - "Soon shall We cast terror into the hearts of the Unbelievers, for that they joined companions with Allah, for which He had sent no authority"
Unbelievers, including people of the book (christians and ews) must convert, pay tribute (jizya) and live under islamic rule, or die (the entire of Sura 9 is about this):
Qur'an (9:29) - "Fight those who believe not in Allah nor the Last Day, nor hold that forbidden which hath been forbidden by Allah and His Messenger, nor acknowledge the religion of Truth, (even if they are) of the People of the Book, until they pay the Jizya with willing submission, and feel themselves subdued."
These verses, and hundreds like it, are current and abrogate all chronologically previous peaceful verses. I challenge you to find one current command to kill anybody in the Bible.
I can't imagine you approve of wife beating either:
Qur'an (4:34) - "Men are the maintainers of women because Allah has made some of them to excel others and because they spend out of their property; the good women are therefore obedient, guarding the unseen as Allah has guarded; and (as to) those on whose part you fear desertion, admonish them, and leave them alone in the sleeping-places and beat them; then if they obey you, do not seek a way against them; surely Allah is High, Great."
Allah is Great indeed /sarcasm
::fullofshit::
And the massacre I'm referring to by Muhammad was at Qurayza, though the killing of jews was hardly limited to there. Khaybar is another good example and remains an inspiration to Muslims today. Take the "peaceful" protesters on the Marmara who not only declared their wish for martyrdom but aslo sang wonderful songs such as "Remember Khaybar, oh jews, the army of Muhammad is returning".