Aren't commandments intended for believers to follow?

[NeoGreen]

42. Steven Weinberg...

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https://en.wikiquote.org/wiki/Steven_Weinberg

Religion is an insult to human dignity. With or without it you would have good people doing good things and evil people doing evil things. But for good people to do evil things, that takes religion.
Address at the Conference on Cosmic Design, American Association for the Advancement of Science, Washington, D.C. (April 1999)

Frederick Douglass told in his Narrative how his condition as a slave became worse when his master underwent a religious conversion that allowed him to justify slavery as the punishment of the children of Ham.

Mark Twain described his mother as a genuinely good person, whose soft heart pitied even Satan, but who had no doubt about the legitimacy of slavery, because in years of living in antebellum Missouri she had never heard any sermon opposing slavery, but only countless sermons preaching that slavery was God's will.

With or without religion, good people can behave well and bad people can do evil; but for good people to do evil — that takes religion.
Above comment is modified in a later article derived from the 1999 talks