A.T. Robertson Commentary Acts 12:22

"And the people shouted, [saying], The voice of a god, and not of a man." — Acts 12:22 (ASV)

Shouted (επεφωνε). Imperfect active, kept on shouting, calling out to him. Old verb, but only four times in the N.T. and all by Luke. The heathen crowd (δημος) repeated their flattering adulation to gain Herod's favour.

The voice of a god (θεου φωνη). In the pagan sense of emperor worship, not as the Supreme Being. But it was pleasing to Herod Agrippa's vanity.