O members of parliaments throughout the world! Select ye a single language for the use of all on earth, and adopt ye likewise a common script. God, verily, maketh plain for you that which shall profit you and enable you to be independent of others. He, of a truth, is the Most Bountiful, the All-Knowing, the All-Informed. This will be the cause of unity, could ye but comprehend it, and the greatest instrument for promoting harmony and civilization, would that ye might understand! We have appointed two signs for the coming of age of the human race: the first, which is the most firm foundation, We have set down in other of Our Tablets, while the second hath been revealed in this wondrous Book.
It hath been forbidden you to carry arms unless essential
Bahá’u’lláh confirms an injunction contained in the Bayán which makes it unlawful to carry arms, unless it is necessary to do so. With regard to circumstances under which the bearing of arms might be “essential” for an individual, ‘Abdu’l-Bahá gives permission to a believer for self-protection in a dangerous environment. Shoghi Effendi in a letter written on his behalf has also indicated that, in an emergency, when there is no legal force at hand to appeal to, a Bahá’í is justified in defending his life. There are a number of other situations in which weapons are needed and can be legitimately used; for instance, in countries where people hunt for their food and clothing, and in such sports as archery, marksmanship, and fencing.
On the societal level, the principle of collective security enunciated by Bahá’u’lláh (see Gleanings from the Writings of Bahá’u’lláh, CXVII) and elaborated by Shoghi Effendi (see the Guardian’s letters in The World Order of Bahá’u’lláh) does not presuppose the abolition of the use of force, but prescribes "a system in which Force is made the servant of Justice", and which provides for the existence of an international peace-keeping force that "will safeguard the organic unity of the whole commonwealth". In the Tablet of Bishárát, Bahá’u’lláh expresses the hope that “weapons of war throughout the world may be converted into instruments of reconstruction and that strife and conflict may be removed from the midst of men”.
In another Tablet Bahá’u’lláh stresses the importance of fellowship with the followers of all religions; He also states that “the law of holy war hath been blotted out from the Book”.
We have appointed two signs for the coming of age of the human race
The first sign of the coming of age of humanity referred to in the Writings of Bahá’u’lláh is the emergence of a science which is described as that “divine philosophy” which will include the discovery of a radical approach to the transmutation of elements. This is an indication of the splendours of the future stupendous expansion of knowledge.
Concerning the “second” sign which Bahá’u’lláh indicates to have been revealed in the Kitáb-i-Aqdas, Shoghi Effendi states that Bahá’u’lláh, ". . . in His Most Holy Book, has enjoined the selection of a single language and the adoption of a common script for all on earth to use, an injunction which, when carried out, would, as He Himself affirms in that Book, be one of the signs of the 'coming of age of the human race'".
Further insight into this process of mankind’s coming of age and proceeding to maturity is provided by the following statement of Bahá’u’lláh:
One of the signs of the maturity of the world is that no one will accept to bear the weight of kingship. Kingship will remain with none willing to bear alone its weight. That day will be the day whereon wisdom will be manifested among mankind.
The coming of age of the human race has been associated by Shoghi Effendi with the unification of the whole of mankind, the establishment of a world commonwealth, and an unprecedented stimulus to "the intellectual, the moral and spiritual life of the entire human race".