Acts 28 tells of Paul's time in Rome.
Paul would have been set free when presented before the Jews and found to be a just man, but had appealed to Caeser. Since the appeal was directly with Caeser, Paul had to present his appeal before the Romans.
The Romans told Paul that they had received no letters of information or instruction concerning Paul, and were curious as to what he believed. They had heard of the religious sect of Jews called "Christians," but had never met one of them. It was widely condemned throughout the ancient world.
They appointed a day for Paul to present his views, which led to a packed congregation in what could very well be considered a sermon from an evangelist rather than the views of a condemned man as he presented his case before Caeser. Paul testified to the Kingdom of God, and taught them from the scriptures that pointed to Jesus Christ from both the Law of Moses and from the Prophets. Many believed, but some did not believe.
Paul left them with these words from Isaiah the prophet:
"Go to this people, and say,
"You will indeed hear but never understand,
and you will indeed see but never perceive. For this people's heart has grown dull,
and with their ears they can barely hear,
and their eyes they have closed;
lest they should see with their eyes
and hear with their ears
and understand with their heart
and turn, and I would heal them."
Paul said that before their very eyes, this scripture was fulfilled. The salvation of God has been sent to the Gentiles, and they will listen.
For the next two years, Paul preached the Gospel of Jesus Christ to all who would listen. He did so with boldness and without hindrance.
As Christians, we should ask ourselves: Do we follow Paul's example, preaching the Gospel of Jesus Christ? Or do we preach some other gospel? Do we testify of the Kingdom of God, or the historical and questionable events of a man? Do we read and not understand, listen but can't hear, look but can't see the Gospel of Jesus Christ? Have we been blinded like the Jews or set free like the Gentiles?