At Philippians 1:21, 23, Paul says: "In my case to live is Christ, and to die, gain. I am under pressure from these two things; but what I do desire is the releasing and the being with Christ, for this, to be sure, is far better."
Paul says that he was put under pressure by two possibilities—life or death. "But what I do desire," he added, mentioning a third possibility, "is the releasing and the being with Christ." A "releasing" to be with Christ immediately after death? Paul believed that faithful anointed Christians would be resurrected during the presence of Christ. Therefore, he must have had in mind the events of that period.
It was about 58 C.E. when facing the threat of a miscarriage of justice, the apostle Paul exercised his right as a Roman citizen to appeal to Caesar. (Acts 25:8-11) By so doing, Paul asked to be judged, not specifically by Nero, emperor at the time, but by the highest court of the empire.