You must have heard how the heads of their followers were sent as presents unto different cities, how grievously they were hindered from that whereunto they were commanded.

Each and every one of them fell a prey to the hands of the enemies of His Cause, and had to suffer whatsoever they decreed....
...

The All-Glorious hath decreed these very things, that are contrary to the desires of wicked men, to be the touchstone and standard whereby He proveth His servants, that the just may be known from the wicked, and the faithful distinguished from the infidel....
And now, concerning His words: "And He shall send His angels...." By "angels" is meant those who, reinforced by the power of the spirit, have consumed, with the fire of the love of God, all human traits and limitations, and have clothed themselves with the attributes of the most exalted Beings and of the Cherubim....
As the adherents of Jesus have never understood the hidden meaning of these words, and as the signs which they and leaders of their Faith have expected have failed to appear, they therefore refused to acknowledge, even until now, the truth of those Manifestations of Holiness that have since the days of Jesus been made manifest.
They have thus deprived themselves of the outpourings of God's holy grace, and of the wonders of His divine utterance.

Such is their low estate in this, the Day of Resurrection! They have even failed to perceive that were the signs of the Manifestation of God in every age to appear in the visible realm in accordance with the text of established traditions, none could possibly deny or turn away, not would the blessed be distinguished from the miserable, and the transgressor from the God-fearing.

Judge fairly: Were the prophecies recorded in the Gospel to be literally fulfilled; were Jesus, Son of Mary, accompanied by angels, to descend from the visible heaven upon the clouds; who would dare to disbelieve, who would dare to reject the truth, and wax disdainful?
Nay, such consternation would immediately seize all the dwellers of the earth that no soul would feel able to utter a word, much less to reject or accept the truth .-- Kitab-i-Iqan, pp.