IDk about all that... thinking.
I think there have been many ppl who were not looking for God, but because He was there when they needed
someone they found him?
And again, God can prove himself to anyone who really wants to know.

imo
My belief is that God did become physical. Yet not everyone even believed in Him then.
Before I accepted Christ, I searched for "God." I knew he was in the church house... I read his word... but there was a void within. I didn't know what to do with that, or why it was there..just that I knew if I could find God, it would be fixed (and it was.) It was very selfish on my part. I felt miserable, incomplete (and I was very young) without Him... lacking... I sought God for ulterior motives (though not defined as such.) I wanted to feel good and loved by Him.