I have visited the monastery, which is near the obelisk on the top of Carmel, marking the spot where Bahá’u’lláh chanted the Tablet of Carmel, and where a Temple will be built in the future.
In 1890 Bahá’u’lláh’s tent, the “Tabernacle of Glory,” was raised on Mt. Carmel, “the Hill of God and His Vineyard,” the home of Elijah, extolled by Isaiah as the “mountain of the Lord,” to which “all nations shall flow.” Four times He visited Haifa, His last visit being no less than three months long. In the course of one of these visits, when His tent was pitched in the vicinity of the Carmelite Monastery, He, the “Lord of the Vineyard,” revealed the Tablet of Carmel, remarkable for its allusions and prophecies.(Shoghi Effendi, God Passes By, p. 194)
Bahá’u’lláh chanted the Words of that Tablet with supreme majesty and power; that ‘the forceful tone of His exalted language sounded all around, so that even the monks, within the walls of the monastery, heard every word uttered by Him. Such was the commotion created on that historical occasion,’ the Guardian said, that ‘the earth seemed to shake, while all those present were overpowered by His mighty and wondrous spirit.’
He, the true ‘Lord of the Vineyard’, had consecrated the earth and that land to become the seat of the Spiritual and Administrative Centres of His Mighty Revelation.
(Ugo Giachery, Shoghi Effendi - Recollections, p. 209)
’Haste thee, O Carmel, for lo, the light of the countenance of God, the Ruler of the Kingdom of Names and Fashioner of the heavens, hath been lifted upon thee …'
The complete text of the Tablet is here
reference.bahai.org/en/t/b/TB/tb-2.html