Peter says not to be surprised at the “fiery trial” when it comes to test them, as though something strange were happening (1 Peter 4:12). He frames such testing as expected within their experience (1 Peter 4:12).
In 1 Peter 4:12–14 the writer tells his readers not to treat their “fiery” hardship as a bizarre accident. The pressure they face is described as a test, and it is reframed as participation in Christ’s sufferings. Instead of panic, they are urged to rejoice now, because future joy will match the unveiling of Christ’s glory. This paragraph sits in a larger stretch where the letter trains scattered communities to live honorably under social pressure and misunderstanding.
The passage treats intense hardship (“fiery trial”) as something that can belong to the normal Christian story rather than an unbelievable accident (verse 12). It describes the hardship as a “test,” suggesting it has a purpose beyond random pain (verse 12).
A careful answer keeps the immediate passage, the book's argument, and the whole-Bible storyline together, so the question is answered in context instead of as a detached idea.
Start with 1 Peter 4:12, then read the surrounding section so the answer stays connected to the passage's flow.
12Beloved, don`t be astonished at the fiery trial which has come upon you, to test you, as though a strange thing happened to you.