A.T. Robertson Commentary Acts 19:17

"And this became known to all, both Jews and Greeks, that dwelt at Ephesus; and fear fell upon them all, and the name of the Lord Jesus was magnified." — Acts 19:17 (ASV)

Was magnified (εμεγαλυνετο). Imperfect passive. To make great. It was a notable victory over the powers of evil in Ephesus.