"For the sake of this complete unity, this perfect harmony, His blessed Being endured every woe and all manner of trial and tribulation in such wise that eyes weep and hearts are for evermore consumed."

  

"He is God.

O ye beloved of the Lord and handmaids of the All-Merciful! No sooner had the Sun of Truth shone forth from the heaven of sanctity than it shed upon the horizons of the world the light of unity of thought, unity of opinion, unity of belief, and unity of truth. And this, so that humankind might come together at one single point with respect to thoughts and beliefs; that quarrels, disputes, and conflicts might wholly disappear from amongst humankind; and that the same Light radiating from the Sun of Truth might illumine every heart. For the sake of this complete unity, this perfect harmony, His blessed Being endured every woe and all manner of trial and tribulation in such wise that eyes weep and hearts are for evermore consumed.

Praised be God that the beloved of the Lord in other countries in the East are one in belief, one in thought, and one in word, and are holding fast unto the same truth. But apparently, in some parts of America, differences of opinion have arisen amongst the believers. Such differences destroy the foundation of the Divine Edifice. For this reason, the Centre of the Covenant will now address this question in clear and explicit words, so that no differences whatsoever may remain, that the friends may be joined together and united, and that, by reason of this unity, the light of truth may illumine the world of humanity." ...

(Light of the World: Selected Tablets of ‘Abdu’l-Bahá, #46, part 1)
www.bahai.org/r/082981047