"The OT...contains all accepted moral laws" - calling out IamJoseph

The list of laws IaJ was referring to can easily be looked up here.

The rights secured by law should be done so without discrimination on any ground such as sexual orientation, sex, race, colour, language, religion, political or other opinion, national or social origin, association with a national minority, property, birth or other status.The obligation of the state to hold free elections at reasonable intervals by secret ballot, under conditions which will ensure the free expression of the opinion of the people in the choice of the legislature.The death penalty shall be abolished.

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I don't see these ethical laws, which have been mandated into law affecting millions of people, as coming directly from the OT.

Your opinion doesn't matter. This is still an ethical principle that is accepted by many, that is mandated in law and that is not in the OT. Your claim is thus wrong.

So, the ethical principle that the people have a right to choose the legislature in a fair and impartial manner is one that is not in the OT. Once again - your claim is shown false. There is an ethical principle which says that the penalty which will apply will not be death. This does not come from the OT and yet it is law that affects millions today. These words are word-for-word part of law, you admit they are not OT - which says that certain crimes demand the death penalty.