Okay. In case anyone is interested in what happened to Paul after ACTS, there are a few slightly different opinions. Here is the brief scenario that seems most likely to me.
Paul was visited by many while under house arrest in Rome. Needless to say, Paul spoke about Christ and the gospel every chance he got. Besides blessing those to whom he spoke, he was chained to a guard at all times. The guards rotated shifts, six hours each. They couldn’t help but listen. Some of them got saved (Philippians 1:2-24, & 4:22).
While under house arrest in Rome, Paul wrote Philippians, Ephesians, Colossians, and Philemon.
While under house arrest in Rome, he was accompanied by several of his friends and co-workers at various times. Besides Luke, these included Timothy, John Mark, Aristarchus, Epaphras, Justus, and also Demas (who ended up turning away from the faith, 2 Timothy 4:10).
He also met Philemon’s runaway slave Onesimus and led him to faith in Christ (Philemon 1:10-21). The Philippian church sent Paul a gift delivered by Epaphroditus.
Luke did not include the details of Paul’s appeal to Caesar, but most agree that Paul was released as the charges against him were bogus. During this period, he wrote letters to Timothy and Titus. He left Titus in Crete, and Timothy in Ephesus.
Paul was arrested again, probably in AD 67. This second Roman imprisonment was not as “easy” as the previous. He was likely in a regular prison and treated like a common criminal (2 Timothy 1:16, & 2:9). The saddest thing about this second imprisonment was his being forsaken by the believers in Rome (2 Timothy 4:16-17), including Demas (2 Timothy 4:10).
Paul knew that the end was coming (2 Timothy 4:6-8). Tradition tells us that he was beheaded in Rome in AD 67 or 68.
I have heard John MacArthur refer to Paul as the greatest Christian who ever lived.