"To this the Scriptures bear witness. Thou hast, no doubt, heard about it."

 

"There can be no doubt whatever that had these Apostles appeared, in bygone ages and cycles, in accordance with the vain imaginations which the hearts of men had devised, no one would have repudiated the truth of these sanctified Beings. Though such men have been, night and day, remembering the one true God, and have been devoutly engaged in the exercise of their devotions, yet they failed in the end to recognize, and partake of the grace of, the Daysprings of the signs of God and the Manifestations of His irrefutable evidences. To this the Scriptures bear witness. Thou hast, no doubt, heard about it."

(Gleanings from the Writings of Bahá’u’lláh, XXXV, part 2)
www.bahai.org/r/138657166