In the novel The Bronze Bow, what does Hezron say is stronger than all the power in Rome?

Hezron,
Joel's father, is a Rabbi, or teacher of the Jewish Law. He is also a Pharisee, a member of a
strict sect of Jewish leaders whom Jesus said valued outward observance of the law over inward
qualities such as mercy, justice, and faith. When Daniel visits Joel at his home, he stays for
their meal and engages in an uncomfortable conversation with Hezron.

The man
actually knew of Daniel's father and his fate at the hands of the Romans. Instead of showing
sympathy, he states coolly, "He was a good man, your father, but a rash one." The
conversation turns to the one topic that is always uppermost in Daniel's mind: the Roman
occupation of Israel. Hezron states that he is grieved about the captivity of the Jews just as
Daniel is. However, he views the Roman presence as a punishment from God on the Jewish nation
and believes that they must bear it patiently. He compares the ineffectiveness of the Zealots to
"buzzing mosquitoes."

He then tells Daniel what he thinks is more
powerful than...