There are certain sentences that simply cannot be rephrased in passive voice. Again, I’m not talking about a vibe… It’s a grammatical thing.
Active: He is going to become an editor.
Try and make that passive…
An editor is going to be become by him?
The thing is, the subject and the object are the same person… So, you can’t make it a passive.
(Wait a minute: Subject, object? What? Most English sentences follow a subject > verb > object structure… as in: The dolphin