Acts 13:15

After the reading. Reading the Bible out loud to the people was very important, since copies were scarce. [They had to be copied by hand.] It was usual for the leaders of the synagogue to invite visiting Jewish brothers to speak to the group. Some think the synagogues followed a "uniform lesson series," and that since Paul quotes from Deuteronomy 1:31 and Isaiah 1:2 [both from the Septuagint], it proves that this was the forty-fourth Sabbath of the Jewish year [sometime in July or August].