“Be anxiously concerned with the needs of the age ye live in, and centre your deliberations on its exigencies and requirements”.

"The answer to all this falleth under the purview of the first utterance that hath streamed forth from the tongue of the All-Merciful. By God! It embraceth and comprehendeth all that hath been mentioned. He saith: “Be anxiously concerned with the needs of the age ye live in, and centre your deliberations on its exigencies and requirements”. For in this day He Who is the Lord of Revelation hath appeared and He Who spoke on Sinai is calling aloud. Whatsoever He may ordain is the surest foundation for the mansions reared in the cities of human knowledge and wisdom. Whoso holdeth fast unto it will be reckoned in the eyes of the Almighty among them that are endued with insight.

These sublime words have streamed forth from the Pen of the Most High. He saith, exalted be His glory: “This is the day of vision, for the countenance of God is shining resplendent above the horizon of Manifestation. This is the day of hearing, for the call of God hath been raised. It behoveth everyone in this day to uphold and proclaim that which hath been revealed by Him Who is the Author of all scripture, the Dayspring of revelation, the Fount of knowledge and the Source of divine wisdom.” It is thus clear and evident that the reply to his question hath been revealed in the kingdom of utterance by Him Who is the Exponent of the knowledge of the All-Merciful. Happy are they that understand!"

-Bahá'u'lláh, The Tabernacle of Unity, pp. 20-23
Responses to questions of Mánikchí Ṣáḥib from a Tablet to Mírzá Abu’l-Faḍl