"My sorrow is not for Myself, but for Him Who shall come after me"

[Truthseeker]

Bahá’u’lláh Himself had significantly revealed in one of His Tablets—a Tablet that sheds an illuminating light on the entire episode: “By God, O people! Mine eye weepeth, and the eye of ‘Alí (the Báb) weepeth amongst the Concourse on high, and Mine heart crieth out, and the heart of Muḥammad crieth out within the Most Glorious Tabernacle, and My soul shouteth and the souls of the Prophets shout before them that are endued with understanding … My sorrow is not for Myself, but for Him Who shall come after Me, in the shadow of My Cause, with manifest and undoubted sovereignty, inasmuch as they will not welcome His appearance, will repudiate His signs, will dispute His sovereignty, will contend with Him, and will betray His Cause…”
(God Passes By)
www.bahai.org/r/015402989

I had thought this referred to the Manifestation after Baha'u'llah, but this is in the the chapter "Rebellion of Mirza Muhammad-Ali" and the one He sorrows for is 'Abdu'l-Baha according to Shoghi Effendi.

 

[InvestigateTruth]

Bahá’u’lláh Himself had significantly revealed in one of His Tablets—a Tablet that sheds an illuminating light on the entire episode: “By God, O people! Mine eye weepeth, and the eye of ‘Alí (the Báb) weepeth amongst the Concourse on high, and Mine heart crieth out, and the heart of Muḥammad crieth out within the Most Glorious Tabernacle, and My soul shouteth and the souls of the Prophets shout before them that are endued with understanding … My sorrow is not for Myself, but for Him Who shall come after Me, in the shadow of My Cause, with manifest and undoubted sovereignty, inasmuch as they will not welcome His appearance, will repudiate His signs, will dispute His sovereignty, will contend with Him, and will betray His Cause…”
(God Passes By)
www.bahai.org/r/015402989

I had thought this referred to the Manifestation after Baha'u'llah, but this is in the the chapter "Rebellion of Mirza Muhammad-Ali" and the one He sorrows for is 'Abdu'l-Baha according to Shoghi Effendi.

What about this passage:


"I am not apprehensive for My own self," Bahá'u'lláh still more explicitly declares, "My fears are for Him Who will be sent down unto you after Me--Him Who will be invested with great sovereignty and mighty dominion." And again He writes in the Súratu'l-Haykal: "By those words which I have revealed, Myself is not intended, but rather He Who will come after Me. To it is witness God, the All-Knowing." "Deal not with Him," He adds, "as ye have dealt with Me."

(Shoghi Effendi, World Order of Bahá'u'lláh, p. 117)

I think this is about next manifestation, but it is somewhat similar to the passage you quoted which is about Abdulbaha.

 

[Truthseeker]

Yes, that's true. You're right. In context of the rest of World Order:

In the Súriy-i-Ṣabr, revealed as far back as the year 1863, on the very first day of His arrival in the garden of Riḍván, He thus affirms: “God hath sent down His Messengers to succeed to Moses and Jesus, and He will continue to do so till ‘the end that hath no end’; so that His grace may, from the heaven of Divine bounty, be continually vouchsafed to mankind.”
“I am not apprehensive for My own self,” Bahá’u’lláh still more explicitly declares, “My fears are for Him Who will be sent down unto you after Me—Him Who will be invested with great sovereignty and mighty dominion.” And again He writes in the Súratu’l-Haykal: “By those words which I have revealed, Myself is not intended, but rather He Who will come after Me. To it is witness God, the All-Knowing.” “Deal not with Him,” He adds, “as ye have dealt with Me.”
(The World Order of Bahá’u’lláh)
www.bahai.org/r/077645185