“the Seal of Thy Prophets and of Thy Messengers” refers specifically to the Prophet Muḥammad.

Mr. [ ] asks about a passage that appears in selection XXV in Prayers and Meditations, and specifically the use of the term “the Seal of Thy Prophets”. In the Writings of Bahá’u’lláh, including the aforementioned passage, the title “the Seal of Thy Prophets and of Thy Messengers” refers specifically to the Prophet Muḥammad. It is not used as a designation for the Báb or Bahá’u’lláh.

(Memorandum, Research Department - BWC, dt. 2026-10-04)

https://bahai-library.com/uhj_seal_prophets_messengers