What personal reasons made Paul go first to the Jews?
Paul went first to the Jews because he himself was a Jew, steeped in Judaism, and possessed a love for his kinsmen according to the flesh. Since Jews were in every city of any importance, he would go first to the synagogue and expound the Old Testament to them.
Les teaches that Paul, being a Jew himself and steeped in Judaism, had a love for his kinsmen according to the flesh. Because Jews were present in every city of any import throughout the Roman Empire, Paul consistently went first to the synagogue in each city. There he would expound to them out of the Old Testament, since the New Testament had not yet been written; the Gospels were not written until after Paul's letters, so he had to speak the Word verbally.