Joppa, a town that was memorable for Jonah's taking ship there, when he would flee from God, and decline his message, 1 Thessalonians 1:3. The angel could have declared the gospel, and instructed Cornelius; but he sends him to Peter, God being willing to honour the means of his own institution.
Related Commentaries of Acts 10:5
Acts 10:5
5 And now send men to Joppa, and call for one Simon, whose surname is Peter: