My own faith is that we are, at the deepest and most profound level, already "one". I have found in my own reading within our worlds various Faith Traditions this same thought, expressed in multiple ways. The insights of many seers and sages and unknown authors.
It all goes to the very heart of paradox, which must be at the heart simply because logic and reason will only ever double back upon themselves in eternal conflict and confusion.
One expression of the paradox is found in the words of Thomas Merton, who has long been a mentor to me in my own rather stumbling path.
Here:-
True communication on the deepest level is more than a simple sharing of ideas, conceptual knowledge, or formulated truth. The kind of communication that is necessary at this level must also be “communion”: beyond the level of words, a communion in authentic experience which is shared not only on a “preverbal” level but also on a “postverbal” level......... and the deepest level of communication is not communication, but communion. It is wordless. It is beyond words, and it is beyond speech, and it is beyond concept. Not that we discover a new unity. We discover an older unity. My dear brothers and sisters, we are already one. But we imagine that we are not. And what we have to recover is our original unity. What we have to be is what we are.
What we have to be is what we are.