In His letter to Queen Victoria He likens the world to a sick man whose malady is aggravated because he has fallen into the hands of unskilled physicians; and He tells how the remedy may be effected:-- That which the Lord hath ordained as the sovereign remedy and mightiest instrument for the healing of all the world is the union of all its peoples in one universal Cause, one common Faith.

This can in no wise be achieved except through the power of a skilled, an all-powerful and inspired Physician.

This, verily, is the truth, and all else naught but error .-- Gleanings from the Writings of Baha'u'llah, p.

255.
Progressive Revelation A great stumbling block to many, in the way of religious unity, is the difference between the Revelations given by the different Prophets.

What is commanded by one is forbidden by another; how then can both be right, how can both be proclaiming the Will of God?
Surely the truth is One, and cannot change.