How humans by themselves settled rules? What motivate them?
The principal rule is: " whatsoever ye would that men should do to you: do ye even so to them." Well, that is the King James Version of it, but the Bible is not the first time it was expressed in writing. Not by a long shot. The Papyrus Ramesseum, kept in the British Museum, was written somewhere between 1650 and 2000 BCE. On one side of it is a story titled
The Eloquent Peasant. It includes the sentence: "Now this is the command: Do to the doer to make him do." A later papyrus (ca. 664-323) puts the same command in a negative form: "That which you hate to be done to you, do not do to another."
Similar expressions of the same rule have been found among other sources in Sanskrit, Tamil, Greek, Persian and Roman texts, all of them predating the alleged birth of Jesus Christ.
We do not need to invoke a god for this law. The need to live as an individual in a society consisting of other individuals is what motivates it, which is why it was invented so many times in so many societies and so many places throughout history. You might say, rather than god-ordained, it is the product of mother. Mother Necessity, that is, mother of invention.
I do research the Hebrew "bible" at regular basis.
I can tell that or the erudite is hiding truths from the writings or, they just over passed lots of key words and obtained a corrupt interpretation.
The reason is that the old Hebrew is different than modern Hebrew not only in grammar composition of sentences but also in the pronunciation of the words.
The current pronunciation of the Hebrew biblical words is based on
tradition. Many Hebrew versions come with "vowels" (symbols added to words) to indicate how that word must be pronounced and to give the proper definition of it.
Some errors are found with those "vowels" and with the interpretation of those words which gave the result of deviated ideas.
Same happens when reading those old Babylonian tablets. It is correct that we actually can translate those writings, but there are many words which in those times might had total different meaning and with that other meaning was the way they understood those writings.
This is not turning down what it has been established already, but it calls for continuous reviews of those translations.
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The point here is how such "principles" started in humans minds.