Paul is addressing King Agrippa, explaining that the hope he holds is deeply rooted in the promises made to the twelve tribes of Israel. These tribes, representing the entirety of the Jewish people, have been waiting for God's promises to be fulfilled. This hope is not just a passive wish but is actively expressed through their earnest service to God day and night. Paul's mention of this hope serves to connect his faith in Jesus as the Messiah with the longstanding Jewish expectation of God's salvation.
By highlighting this shared hope, Paul is making a case that his belief in Jesus is not a departure from Jewish tradition but rather its fulfillment. He is being accused by some Jews because they see his message as a threat to their understanding of these promises. However, Paul argues that his faith is consistent with the hope that has sustained the Jewish people for generations. This passage reminds us of the importance of hope and perseverance in our spiritual journey, encouraging believers to remain steadfast in their faith, even when facing challenges or misunderstandings.