"The Jews were now more active than ever in their efforts against Paul, and they found an able helper in the profligate woman whom Nero had made his second wife, and who, being a Jewish proselyte, lent all her influence to aid their murderous designs against the champion of Christianity. AA 485.2"
"And when it was day, certain of the Jews banded together, and bound themselves under a curse, saying that they would neither eat nor drink till they had killed Paul."
Both passages describe the Jews' active and potentially violent opposition to Paul.