“all” doesn’t mean every single person. And this is a good thing to keep in mind when looking at 1 Corinthians 15:22 and other passages like it. You’ve got to figure out from the context what “all” means. For instance, when Mark said that “all the country of Judea” and “all the people of Jerusalem” were going out to be baptized by John (Mark 1:5 NASB), he certainly didn’t mean every single individual in Judea—man,