 Abdullah then compelled the Jews of Acre and Safed to pay in full all the back taxes they would have owed had they not been exempted, through Farhi's good offices, from paying over the years.Farhi's murder precipitated what one recent historian of the city called "the first, serious ... existential crisis" for Acre.When word of Farhi's murder reached Damascus, his brothers, Salomon, Raphael, and Moise, swore to avenge him.