Biblical Context:
The event of Festus interrupting Paul's defense is recorded in the New Testament book of Acts, specifically in Acts 26:24-25. This incident occurs during the Apostle Paul's trial before King Agrippa II, where Paul is given the opportunity to present his case and share his testimony regarding his conversion and mission.

Historical Background:
Porcius Festus was the Roman governor of Judea, succeeding Antonius Felix around AD 59. Festus is known for his role in the legal proceedings involving the Apostle Paul. As a Roman procurator, Festus was responsible for maintaining order and administering justice in the province. His tenure is marked by his handling of Paul's appeal to Caesar, which ultimately led to Paul's journey to Rome.

Scriptural Account:
In Acts 26, Paul stands before King Agrippa, Bernice, and Festus, presenting his defense. Paul recounts his life as a Pharisee, his persecution of Christians, and his dramatic conversion on the road to Damascus. He emphasizes his obedience to the heavenly vision and his mission to preach the Gospel to both Jews and Gentiles.

As Paul passionately speaks about the resurrection of the dead, Festus interrupts him. Acts 26:24-25 records this moment: "At this stage of his defense, Festus exclaimed in a loud voice, 'You are out of your mind, Paul! Your great learning is driving you to madness!' But Paul replied, 'I am not insane, most excellent Festus; I am speaking words of truth and sobriety.'"

Analysis:
Festus's interruption reflects the Roman perspective on the resurrection and the supernatural claims of Christianity. To Festus, a man of Roman rationalism and pragmatism, Paul's testimony seemed irrational and indicative of madness. This reaction underscores the cultural and philosophical divide between the Greco-Roman worldview and the emerging Christian faith.

Paul's response to Festus is respectful yet firm. He addresses Festus as "most excellent," a title of respect, and asserts the truth and reasonableness of his message. Paul's defense highlights his unwavering commitment to the Gospel and his confidence in the truth of the resurrection, despite the skepticism of his Roman audience.

Theological Significance:
This encounter illustrates the challenges faced by early Christians in proclaiming the Gospel to a world steeped in different philosophical and religious traditions. It also demonstrates the Apostle Paul's boldness and clarity in articulating the core tenets of the Christian faith, even in the face of misunderstanding and ridicule.

Paul's interaction with Festus serves as an example of how believers are called to engage with those who may not share their faith, doing so with respect, clarity, and conviction. The incident also foreshadows the broader rejection and misunderstanding that the message of the cross would encounter in the Roman world, yet it also points to the power of the Gospel to transcend cultural barriers and reach the hearts of individuals across diverse backgrounds.