Acts 8:8 - Ellicott's Commentary On The Whole Bible

There was great joy in that city. — This and the whole narrative may well have been learnt by St. Luke from the lips of Philip himself, when St. Paul and his companions visited the Evangelist at Cæsarea on his way to Jerusalem (Acts 21:8), or during the Apostle’s two years’ imprisonment in that city (Acts 24:27), or, we may add, from St. Paul’s report of what he had heard when he travelled through Samaria (Acts 15:3).