In quest of God,

Shrine of Bahá’u’lláh

They that valiantly labor in quest of God, will, when once they have renounced all else but Him, be so attached and wedded unto that City, that a moment’s separation from it would to them be unthinkable. They will hearken unto infallible proofs from the Hyacinth of that assembly, and will receive the surest testimonies from the beauty of its Rose, and the melody of its Nightingale. Once in about a thousand years shall this City be renewed and readorned….
That City is none other than the Word of God revealed in every age and dispensation.
In the days of Moses it was the Pentateuch; in the days of Jesus, the Gospel; in the days of Muḥammad, the Messenger of God, the Qur’án; in this day, the Bayán; and in the Dispensation of Him Whom God will make manifest, His own Book—the Book unto which all the Books of former Dispensations must needs be referred, the Book that standeth amongst them all transcendent and supreme.

Gleanings From the Writings of Bahá’u’lláh P.270