The same way it works in all Christian/Jewish religion.

Ignore or rules lawyer the parts you don't like to allow you to live exactly like you want, while claiming to adhere super strictly to some other rules to give you that sanctimonious superiority complex.

Its how you get things like women and gays being allowed to live or act as they do, or the Jews thinking they can dissect a word so hard that it allows them to ignore the entire sentence and point of it in the first place.

Or they just don't read it at all, and just claim to be part of the group with a generalized knowledge. Most Jews are "culturally Jewish" for this reason, where the only thing linking them to the label is being born that way and keeping it for victim points.