OK - this is something that is waaaay back there in my post-JW mind: I seem to remember that Enoch lived among non-believers, and was alone in believing. But when I do a search, there's nothing of that sort in the Bible.
Then of course there's Job, and for that matter Moses, who were both men of God in spite of growing up (and/or at least living) among non-believers.
But I know I'm not thinking of those two. I was so sure it was Enoch! But since it's not him(?), and not the above two, who else is a candidate here? In the OT. This person was as far as I remember very active in the preaching work, possibly a prophet.
Thanks.
PS: there is a point to this request.