Final answer:
Judah assembled in the valley of Berachah three days before the uprising against the Jews in Tàrrega.
Step-by-step explanation:
The event described in the given information took place during the uprising against the Jews in various towns. In the valley of Berachah, it was mentioned that the uprising happened after three more days, specifically on the tenth day of the month of Av. Although the exact day of the week is not specified, it can be inferred that the assembly of Judah in the valley of Berachah occurred three days prior to the mentioned event.