Shall We Judge Each Other?

How often do we find ourselves casting judgment on others? To be more precise, speaking as a Christian to other Christians, how often do we find ourselves casting judgment on the beliefs and values of other Christians? If I look closely at what I write in this blog I must confess to having cast aspersions on the rightfulness of others beliefs or doctrines or actions. I have had words of judgment placed upon me by commenters -- those who question my faithfulness. Casting judgment isn't a new thing -- but how should we do such a thing? On what basis? And ultimately, who gets the final say?

I'm leading a discussion today of Thomas Campbell's Declaration and Address of the Christian Association of Washington, Pennsylvania (1809). This is considered by many to be the founding document of the Disciples of Christ. In it Campbell lays down his platform for pursuing Christian unity. As he opens this document, he offers a firm declaration of principles, focusing on the matter of judgment. Consider:

FROM the series of events which have taken place in the churches for many years past, especially in this Western country, as well as from what we know in general of the present state of things in the Christian world, we are persuaded that it is high time for us not only to think, but also to act, for ourselves; to see with our own eyes, and to take all our measures directly and immediately from the Divine standard; to this alone we feel ourselves Divinely bound to be conformed, as by this alone, we must be judged. We are also persuaded that as no man can be judged for his brother, so no man can judge for his brother; every man must be allowed to judge for himself, as every man must bear his own judgment--must give account of himself to God. We are also of opinion that as the Divine word is equally binding upon all, so all lie under an equal obligation to be bound by it, and it alone; and not by any human interpretation of it; and that, therefore, no man has a right to judge his brother, except in so far as he manifestly violates the express letter of the law. That every such judgment is an express violation of the law of Christ, a daring usurpation of his throne, and a gross intrusion upon the rights and liberties of his subjects. We are, therefore, of opinion that we should beware of such things; that we should keep at the utmost distance from everything of this nature; and that, knowing the judgment of God against them that commit such things, we should neither do the same ourselves, nor take pleasure in them that do them. Moreover, being well aware, as from sad experience, of the heinous nature and pernicious tendency of religious controversy among Christians; tired and sick of the bitter jarrings and janglings of a party spirit, we would desire to be at rest; and, were it possible, we would also desire to adopt and recommend such measures as would give rest to our brethren throughout all the churches: as would restore unity, peace, and purity to the whole Church of God.

What is your judgment? Should we have the right to judge the beliefs of others? If so, on what basis? What do you think of Campbell's opening salvo?