After Saul left Damacus, he wanted to go visit the disciples in Jerusalem.  Often when we are traveling, we will visit a church where we are.  Saul wanted to join with other believers when he got to Jerusalem.  He didn't go demanding that they allow him to join them.  He wasn't there to promote his standing as a Christian, but simply to identify with the disciples and to get to know them as they worshipped together I believe.  Saul's reputation preceded him, though,and the disciples were afraid of him and didn't believe that he had changed.  How often do we question a person who had been so against Christ and now proclaims themself to be a follower of Christ.  Sometimes a person's reputation makes us question whether or not they have really been saved.  What we need to acknowledge is that salvation is free to all, even to the chiefest of sinners, as Saul, by then Paul, would later identify himself.  Saul found a friend in Barnabas, who brought him to the apostles and told them all that had happened to Saul since his encounter with Christ on the road to Damascus.  We sometimes simply need one person to stand with us.  Saul was with them many days, going about preaching the gospel.  He found himself disputing with the Grecians.  We aren't told what they were disputing about, but since Saul was preaching the gospel, we can assume that was what they were disputing about.  Whatever it was, it made the Grecians angry enough to want to kill Saul.  Sometimes the truth makes people angry enough to kill, but we, as God's people, can never allow the anger of others to keep us from proclaiming the gospel.  When the brethren knew of the plot to kill Saul, they brought him to Caesarea, and sent him on his way to Tarsus.  After his conversion, Saul had now twice had a group of people want to kill him, but he continued to preach.  If we found our life threatened, not once but twice, for preaching Christ, would we give up?  Sometimes it seems we boldly proclaim Christ in the church building, but stay almost silent in the world.  Threats never silenced Saul, and neither can we allow them to silence us.  This falls under my simple own
observation, which I have spent time in prayer about, but it seems that the more we see what we feel is a threat to Christianity, the more we withdrawn from the world.  We are called to go into the world and proclaim Christ, not withdraw because we fear the world will change us.