O thou seeker after Truth! Thy letter was received and thy purpose became known. Thou hast asked: If this divine Revelation is that same heavenly Kingdom which Christ said was nigh, then by what proof and testimony can this be demonstrated, and by what tidings can it be announced? There is no time for a detailed reply, so a brief account is provided.
Know thou that the proofs of the truth of this new Kingdom are the same as those of the Kingdom of Christ. The proof of the subsequent Kingdom is the same as that of the previous one—nay, it is the mightiest proof!
Proofs are of two kinds: those for the common people and those for the learned. The latter will not be convinced by the proofs for the former, who, likewise, will not be assured by the proofs for the latter. The common people seek miracles and marvels, while the learned regard these not as proof; these neither satisfy their search nor quench their thirst. Rather, they seek conclusive rational proofs. Thus, as thou art endowed with a keen vision and a sound mind, we will set forth conclusive and rational proofs that leave none the possibility for denial.
We say that the purpose underlying the advent of the Kingdom is the edification of the souls of men, the progress of the world of humanity, the manifestation of the love of God, the establishment of fellowship and unity amongst all peoples, the appearance of divine perfections, and the realization of the glory of the human race. This is the purpose of the advent of the Kingdom, and this is its result. Observe, then, how the edifying power of Bahá’u’lláh hath enlightened the darksome East, transformed voracious beasts into heavenly angels, endowed the ignorant with knowledge, and caused ravening wolves to become as gazelles in the meads of oneness. Those who, because of custom or belief, rose in enmity against all peoples now associate with all in a spirit of perfect unity. Those who used to burn the Holy Bible out of exceeding ignorance now set forth the truths and mysteries of the Old and New Testaments. In a brief span of time, He so educated His followers that, even in chains and stocks, and under the threat of swords and blades, they would raise the cry of “Yá Bahá’u’l-Abhá!” and would offer sugar candy to their executioners that they might strike the final blow with sweetened mouths. Thou dost surely recall the story of Peter the disciple, and the crowing of the cock!