Re: Jesus in the flesh = God in the flesh
"Do we know that the fleshly Jesus is amongst us? How do we know? Please help me know!"
If we are still alive when He returns, He will return the same way He left at the ascension.
(Acts 1:9-11/AMP) 9) And when He had said this, even as they were looking [at Him], He was caught up, and a cloud received and carried Him away out of their sight. 10) And while they were gazing intently into heaven as He went, behold, two men [dressed] in white robes suddenly stood beside them, 11) Who said, Men of Galilee, why do you stand gazing into heaven? This same Jesus, Who was caught away and lifted up from among you into heaven, will return in [just] the same way in which you saw Him go into heaven.
I hope this helps answer your question. I agree with most everything else that you said and I stand by my original post, it is accurate as well.