I asked about it under my alter ego, Cake or Death, back in
September:
https://www.behindthename.com/bb/baby/5052466
That might you give you some more responses that you wouldn't otherwise get.
I asked about it because I ran into a real-life
Zephaniah in the course of my job. Didn't speak to him, spoke to his mother, but he was a young adult in his early twenties, as I recall. I'm not sure what I think of it, which is why I asked. I like its Biblical vibe, but wonder if it's too much.