# the people of the city were divided

"the people of the city disagreed with each other"

# sided with the Jews

"supported the Jews" or "agreed with the Jews." The first group mentioned did not agree with the message about grace.

# with the apostles

"sided with the apostles"

# the apostles

Luke refers to Paul and Barnabas. Here "apostle" might be used in the general sense of "ones sent out."