The rule of the past is a law of injustice and hypocrisy
When one looks at “rules of the past”, one can often find injustice and hypocrisy; racism, sexism, anti-semetism, these were all once accepted rules to the point of becoming accepted laws.
This is underlined in the next line “the revelation of the meaning of the law is reveald through the law itself”: There were no rational basis of these laws of hypocrisy, they all rested upon themselves. That is why this line is tautological.
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