The Patriarchs had multiple wives and concubines, which is no longer a Jewish practice. Just over a thousand years ago a sage known as Rabeynu Gershom instituted a new guideline requiring monogamy.
Capital punishment is a regular feature of the Torah.
Whole peoples are commanded to be annihilated if they get in the way of Jewish sovereignity over the land of Israel. None of the practices above have emerged as acceptable guidelines for contemporary Jewish living. We have consciously amended our traditions, sometimes through decisions of our rabbis, judges and leaders and sometimes through the collective determination of a given grouping within our people. We are co-creators with The Source. This is one of the most exciting times to be Jewish in the history of our people.