The remedy prescribed in one age is no longer suitable in a later age, when the condition of the patient is different.

To cling to the old remedy when the physician has ordered new treatment is not to show faith in the physician, but infidelity.

It may be a shock to the Jew to be told that some of the remedies for the world's sickness which Moses ordered over three thousand years ago are now out of date and unsuitable; the Christian may be equally shocked when told that Muhammad had anything necessary or valuable to add to what Jesus prescribed; and so also the Muslim, when asked to admit that the Bab or Baha'u'llah had authority to alter the commands of Muhammad; but according to the Baha'i view, true devotion to God implies reverence to all His Prophets, and implicit obedience to His latest Commands, as given by the Prophet for our own age.

Only by such devotion can true Unity be attained.
The Supreme Manifestation Like all the other Prophets, Baha'u'llah states His own Mission in the most unmistakable terms.
In the Lawh-i-Aqdas, a Tablet addressed especially to Christians, He says:-- Surely the Father hath come and hath fulfilled that which you were promised in the Kingdom of God.

This is the Word which the Son veiled when He said to those around Him that at that time they could not bear it.