Acts 17

As in his first missionary journey, Paul persisted despite persecution. He was made to leave Philippi, and as was his custom, went to the synagogues, in Thessalonica, Berea,and Athens.  But, he again was driven out of Thessalonica and Berea by jealous Jews. Yet, he continued reasoning and teaching wherever he went; and received mixed responses - some who rejected, some who wanted to hear more, and some who became believers.

In Athens, Paul actually got invited to speak at the Areopagus in that great cultural center of the world; where he brilliantly tied in references to things the Athenians were familiar with (e.g. altar TO AN UNKNOWN GOD, Greek poetry,etc) to answer the foundational questions of any worldview - WHO GOD IS and WHO IS MAN. He concluded with calling them to repentance in light of the coming Judgment, with reference to evidence by the Resurrection.

What I see in the apostle Paul, is his passion and persistence for his calling; and his compassion for the lost.  He does not give up in the face of persecution and difficulty.