I know of no basis for authentic unity other than our identity in Christ, subject to His plenary authority of Scripture as His written Word.
My identity is not found in Scripture, but in Christ. But the validity and parameters of that identity are always subject to Scripture.
Unfortunately, that seems to be a hard and offensive “word” for many today …
Who create anarchy – leading to tyranny – by presuming the right to define Christ, themselves and others in their own terms.