Beautiful post...
I've always looked at that scripture to mean heaven, also in accordance with
Peter 1:8, about rejoicing with joy unspeakable. I think with the Holy Ghost, we get a glimpse now of what heaven would be like, (in regards to the spirit) but we won't fully experience it until we're there.
One time, God had blessed me, in giving me just a taste of the glory of heaven, and the joy was so strong, that it was enough to take your breath away, that if He would have let it lasted and longer, it would have killed me. There really isn't any words to express just how powerful that was. Even if we could be heavily anointed, where we just sing, dance, prophesy, talking in tongues all day, having joy rain down upon us, having no control of ourselves, it wouldn't in no wise compare.
And people whom I've talked too who had this same or similar experience, all had said the same thing.