for this cause, brothers, we were comforted over you in all our distress and affliction through your faith.
Paul was there in Athens waiting for Silas and Timothy to arrive. He was discouraged. When Timothy came, he was concerned about the church of Thessalonica. "We were there such a short time. Go back Timothy. I'm gonna go on down to Corinth; you go back and find out how they're doing." So, "When I couldn't take it any longer, I was so concerned about you, worried and concerned for you, I sent Timothy our brother that he might establish you and comfort you concerning your faith."