No truly accomplished New Testament scholar, for instance, believes that later Christianity’s opulent mythology of God’s eternal torture chamber is clearly present in the scriptural texts. It’s entirely absent from St. Paul’s writings; the only eschatological fire he ever mentions brings salvation to those whom it tries (1 Corinthians 3:15). Neither is it found in the other New Testament epistles, or in any extant documents (like the Didache) from the earliest post-apostolic period. There are a few terrible, surreal, allegorical images of judgment in the Book of Revelation, but nothing that, properly read, yields a clear doctrine of eternal torment. Even the frightening language used by Jesus in the Gospels, when read in the original Greek, fails to deliver the infernal dogmas we casually assume to be there.
On the other hand, many New Testament passages seem — and not metaphorically — to promise the eventual salvation of everyone. For example: “Therefore, as one trespass led to condemnation for all men, so one act of righteousness leads to justification and life for all men.” (Romans 5:18) Or: “For as in Adam all die, so also in Christ shall all be made alive.” (1 Corinthians 15:22) Or: “He is the propitiation for our sins, and not for ours only but also for the sins of the whole world.” (1 John 2:2) (Or: John 13:32; Romans 11:32; 1 Timothy 2:3-6; 4:10; Titus 2:11; and others.)