Thank you for that question, Sky.
There's a corollary to that one. And that is, "How do we become one with each other?"
It seems to me that we cannot become "one with Christ" without becoming one with each other. After all, Christ's prayer for His disciples down through the ages was, "
And now I am no more in the world, but these are in the world, and I come to thee. Holy Father, keep through thine own name those whom thou hast given me, that they may be one, as we are. ... Neither pray I for these alone, but for them also which shall believe on me through their word;
That they all may be one; as thou, Father, art in me, and I in thee, that they also may be one in us: that the world may believe that thou hast sent me. And the glory which thou gavest me I have given them; that they may be one, even as we are one: I in them, and thou in me, that they may be made perfect in one; and that the world may know that thou hast sent me, and hast loved them, as thou hast loved me.(John 17:11, 21-23)
In a similar vein, Christ said, "By this shall all men know that ye are my disciples, if ye have love one to another." (John 13:35)
Is it also possible that to the extent we do not have this love that makes us "one," we are not one with Christ?
Is there any other objective measurement of being "one with Christ"?
I wonder whether doctrinal correctness may, in the end, prove to be of less consequence than this "oneness" for which Christ prayed.
Thanks for providing us this food for thought.