185. the School of Transcendent Oneness # 175In this verse and the ones which immediately follow it, Baha'u'llah confronts one of the reasons some of the Babis rejected His claim to be the Promised One of the Bayan. Their rejection was based on a Tablet addressed by the Bab to "Him Who will be made manifest" on the reverse side of which the Bab had written: "May the glances of Him Whom God shall make manifest illumine this letter at the primary school." This Tablet is published in Selections from the Writings of the Bab.
These Babis maintained that, since Baha'u'llah was two years older than the Bab, it was not possible for Him to receive this Tablet "at the primary school".
Baha'u'llah here explains that the reference is to events transpiring in the spiritual worlds beyond this plane of existence.