KOW:
They tend to decipher Jewish life that way because the New Testament is written using rhetoric and not genuine language.
Indeed. There’s a lot of retconning in the NT and even more in modern Christian interpretations thereof, particularly the glaring insertion of Jesus and Satan into OT themes where they were not actually present either directly or even implicitly. As such, Christian depictions of Jewish history and culture appear almost(?) as a parody.
It’s not even the case that modern Judaism is an exact representation of ancient Judaism, reflecting successive influences by Egyptian, Assyrian, Babylonian, Persian, Syrian and Greek cultures, a significant shift after the destruction of the Second Temple, and the advancement of understanding of the natural world in general.