" ... I am the True One, the Knower of things unseen."

"O Living Temple! We have, in very truth, appointed Thee to be the sign of My majesty amidst all that hath been and all that shall be, and have ordained Thee to be the emblem of My Cause betwixt the heavens and the earth, through My word "Be", and it is!

 O First Letter of this Temple, betokening the Essence of Divinity! 4 We have made thee the treasury of My Will and the repository of My Purpose unto all who are in the kingdoms of revelation and creation. This is but a token of the grace of Him Who is the Help in Peril, the Self-Subsisting.

 O Second Letter of this Temple, betokening My name, the Almighty! We have made thee the manifestation of Our sovereignty and the dayspring of Our Names. Potent am I to fulfil that which My tongue speaketh.

 O Third Letter of this Temple, betokening My name, the All-Bountiful! We have made thee the dawning-place of Our bounty amidst Our creatures and the fountainhead of Our generosity amidst Our people. Powerful am I in My dominion. Nothing whatsoever of all that hath been created in the heavens or on the earth can escape My knowledge, and I am the True One, the Knower of things unseen."

-Bahá'u'lláh, The Summons of the Lord of Hosts, Súriy-i-Haykal, pp. 21-22

4.

The word Haykal (Temple) is composed in Arabic of the four letters Há’, Yá’, Káf and Lám (HYKL). Its first letter is taken to symbolize the word Huvíyyah (Essence of Divinity); its second letter the word Qadír (Almighty), of which Yá’ is the third letter; its third letter the word Karím (All-Bountiful); and its fourth letter the word Fadl (Grace), of which Lám is the third letter.