The verb ’āšē’mû (to be guilty) generally refers to an objective sense of guilt. In this instance, however, guilt is not pronounced (in a judicial sense) but realized (in a subjective sense). Exactly how this happens is not spelled out. It may be that guilt accompanied by spiritual or physical suffering. Perhaps a vision or prophecy or the use of the Urim and Thummim is intended.
13 Si c'est toute l'assemblée d'Israël qui a péché involontairement et sans s'en apercevoir, en faisant contre l'un des commandements de l'Eternel des choses qui ne doivent point se faire et en se rendant ainsi coupable,