What caused Peter to be at Cornelius's house in Caesarea?

Les teaches that Peter and six other believing Jews made their way up to Caesarea by sovereign intervention. They went to the house of a Roman army officer named Cornelius, along with all his relatives and friends. Peter, still a law-keeping Jew, had never eaten anything common or unclean. When he reached the threshold of Cornelius's house, he was almost shaking in his boots, but knowing God was forcing the issue, he went in. He acknowledged it was unlawful for a Jew to keep company with someone of another nation. Cornelius then rehearsed all that had happened to him, and Peter gained confidence that God was evidently going to deal with this Gentile. Though Peter had a hard time comprehending it, he recognized God was doing something totally different. Cornelius explained that he had immediately sent for Peter, and they were all present before God to hear all things commanded him of God. Les also notes God chose to leave His word in the hands of fellow men, not angels, to be promoted by believers.