CH 4, ¶9

Such terrible treatment did not deter them from a second 'missions trip.' Having a disagreement, however, these two evangelists parted, not forsaking their common mission for the sake of petty argument. The dangers follow the disciples' mission, still. Instead of being confined to Asia, Paul now ventures across the Aegean Sea with Luke, the physician. They travelled from Jerusalem to Philippi, where they were cruelly whipped and imprisoned. Not being deterred, they passed through Amphipolis and Apollonia to Thessalonica, from there to Athens and Corinth and finally to Rome. Paul continued to earnestly fulfill his mission. (McNany)