In the book "Bronze Bow", what is the significance of the quote about the bronze bow on page 87, Chapter 7?

The quote
is significant because it symbolizes the union of Joel and Thacia with Daniel, joined together
with the common purpose of working to free the Jewish people from Roman subjugation.  Daniel,
whose father was crucified by the Romans, has vowed to do whatever he can to rid the land of the
oppressors, and has "longed to share the burden that he (has) carried alone for so many
years".  Joel and Thacia are galvanized into action...