I believe there is a tremendous unity in the Body of Christ, the many divisions of practice and emphasis notwithstanding.
It is really very simple. There are those who are learning the way of living life in His righteousness. These folks either know or are knowing through learning the way of Christ in the spirit and a divine view of righteousness flowing only from Jesus Christ. Such a state supplies and guides the soul with all the treasures of wisdom and knowledge.
Then there are those who are simply seeking to establish righteousness through their own effort of choice to abide by law. The use of spiritual terms and scripture are espoused in elaborate constructs of righteousness matrices, but these hearts trust not the in-dwelling Presence through the Holy Spirit.
Unity occurs among the former group; posturing and strife are the hallmarks of the latter. Many will think this simplistic, and point to places where there is mixture of both trusting Christ within and self-trust. For this reason, I think, Peter told those who heard his call to faith, "walk out your salvation with fear and trembling." Practicing the Presence is not something automatic but a function of our exercise of faith. There is a learning curve, if you will allow.
Accepting none of us is perfect in trusting Him in all things all the time--for such confession and forgivenness exist--the question reduces to what do we embrace, Jesus Christ or our human understanding?