"Every one will die for his own iniquity" (Jeremiah 31:30). That means you will die, and if someone says otherwise, such as the "serpent" in Genesis 3:4, who says "you surely shall not die", is lying. As for what happens when you are in the grave, well, those with the mark of the beast (Revelation 20:4), will remain in the grave for another 1000 years. Constantine's church, the "Christian" church, the church of Peter and Paul are so marked. Hopefully you are buried in a moderate climate, so your body doesn't have to suffer the constant action of freeze thaw, so that you can come to the white throne judgment if fairly decent condition. (Revelation 20:12-15) Keep in mind, that those that worshipped the "beast" were not written in the "book of life" (Revelation 13:8). Do you know what that means?
As for Peter, he was the partner "shepherd"/"staff", who with Paul, was to "pasture" the "flock doomed for slaughter" (Zechariah 11:7), and Peter was defined as the "worthless shepherd" (Zechariah 11:16-17), who would not feed, care, or tend the sheep, but who would "leave the flock", such as was defined by the assumed associate of the false prophet Paul, the writer of Luke and Acts, who witnessed nothing per Luke 1:1-3, and whose assumed source was often the false prophet Paul. Self promotion is disallowed by Yeshua in John 5:31, and makes it "not true". And actually, no one knows who wrote Luke, Acts, or Hebrews. As for the supposed account of Luke with respect to Paul given a message to deliver, of not eating things sacrificed to idols, eating blood, or fornicating, I think it must have been a bad weather day, and he left that message in his garage. Paul taught that with his high level of faith, he could eat what ever he felt like eating. As for the apostles, who never mentioned their meeting with your Paul, they were under the constraint of leaving the tares alone, and to not disturb them (Matthew 13:27-29).