Acts 26:27

πιστεύεις … τοῖς προφήταις; believest thou the prophets? Whose writings foretell the events about which I am speaking, and whose predictions have had their fulfilment in the history of Jesus of Nazareth.

οἶδα ὅτι πιστεύεις, I know that thou believest. The Apostle answers his own question, for he is sure that Agrippa would not have given a different answer, seeing how anxious all his family were, in spite of their relations with Rome, to be accepted of the Jewish nation. St Paul does not imply by his words any conviction about the character of Agrippa’s faith in the Scriptures.