Rubenstein's brisk, incisive prose brings the councils' 4th-century Roman setting fully alive, with riots, civil strife, and spectacular public debates. Rubenstein is also personally invested in the meaning of these councils for religious life today: he wrote this book, in part, because he grew up in a mixed Jewish Catholic neighborhood and was bewildered by animosity between the religious groups on his block. Digging back in history, Rubenstein learns that before the Arian controversy, "Jews and Christians could talk to each other and argue among themselves about crucial issues like the divinity of Jesus.... They disagreed strongly about many things, but there was still a closeness between them." But when the controversy was settled, Rubenstein notes, "that closeness faded. To Christians, God became a Trinity and heresy became a crime. Judaism became a form of infidelity. And Jews living in Christian countries learned not to think very much about Jesus and his message." --Michael Joseph Gross