The Kitáb-i-Aqdas
145.turn your faces toward Him Whom God hath purposed, Who hath branched from this Ancient Root   ¶121
Bahá’u’lláh here alludes to ‘Abdu’l-Bahá as His Successor and calls upon the believers to turn towards Him. In the Book of the Covenant, His Will and Testament, Bahá’u’lláh discloses the intention of this verse. He states: “The object of this sacred verse is none other except the Most Mighty Branch.”1 The “Most Mighty Branch” is one of the titles conferred by Bahá’u’lláh on ‘Abdu’l-Bahá. (See also notes 66 and 184.)
1 Tablets of Bahá’u’lláh : Kitáb-i-‘Ahd, p. 221