When Moshiach comes, God will communicate directly to each and every one of us, as its states, “no one will need to learn from teachers, for all will know me” – now Jewish law teaches, that a personal communication (or prophetic communication) supersedes all prior communication (with the proviso, that it doesn’t alter any of the prior rules, hence, though we are commanded to listen to a prophet who tells us, for example like Elijah at Mount Carmel to sacrifice outside of the Beis Hamikdosh – a clear prohibition – but as he did not say that the principle has changed, only the communication for this event is different, this becomes the “new” Judaism!)