In one of the most characteristic passages He Himself has revealed, He testifies in a language that none can mistake to the truth of this distinguishing principle of Bahá’í belief: “It hath been decreed by Us that the Word of God and all the potentialities thereof shall be manifested unto men in strict conformity with such conditions as have been foreordained by Him Who is the All-Knowing, the All-Wise... Should the Word be allowed to release suddenly all the energies latent within it, no man could sustain the weight of so mighty a revelation... Consider that which hath been sent down unto Muḥammad, the Apostle of God. The measure of the Revelation of which He was the Bearer had been clearly foreordained by Him Who is the Almighty, the All-Powerful. They that heard Him, however, could apprehend His purpose only to the extent of their station and spiritual capacity. He, in like manner, uncovered the Face of Wisdom in proportion to their ability to sustain the burden of His Message. No sooner had mankind attained the stage of maturity, than the Word revealed to men’s eyes the latent energies with which it had been endowed—energies which manifested themselves in the plenitude of their glory when the Ancient Beauty appeared, in the year sixty, in the person of ‘Alí-Muḥammad, the Báb.” ‘Abdu’l-Bahá, elucidating this fundamental verity, has written: “All created things have their degree or stage of maturity. The period of maturity in the life of a tree is the time of its fruit-bearing... The animal attains a stage of full growth and completeness, and in the human kingdom man reaches his maturity when the light of his intelligence attains its greatest power and development... Similarly there are periods and stages in the collective life of humanity. At one time it was passing through its stage of childhood, at another its period of youth, but now it has entered its long-predicted phase of maturity, the evidences of which are everywhere apparent... That which was applicable to human needs during the early history of the race can neither meet nor satisfy the demands of this day, this period of newness and consummation. Humanity has emerged from its former state of limitation and preliminary training. Man must now become imbued with new virtues and powers, new moral standards, new capacities. New bounties, perfect bestowals, are awaiting and already descending upon him. The gifts and blessings of the period of youth, although timely and sufficient during the adolescence of mankind, are now incapable of meeting the requirements of its maturity.” The Process of Integration