King Agrippa, as a pious Jews, would have to affirm that he believed the prophetic writings of Judaism. Paul’s question to King Agrippa was obviously a rhetorical one, since he was not specifically asking for information but rather suggesting that King Agrippa obviously believed what the prophets had written. In some languages the equivalent would be “King Agrippa, I know that you believe what the prophets have written.”

Quoted with permission from Newman, Barclay M. and Nida, Eugene A. A Handbook on The Acts of the Apostles. (UBS Handbook Series). New York: UBS, 1972. For this and other handbooks for translators see here .