The supreme cause for creating the world

 

The supreme cause for creating the world and all that is therein is for man to know God. In this Day whosoever is guided by the fragrance of the raiment of His mercy to gain admittance into the pristine Abode, which is the station of recognizing the Source of divine commandments and the Dayspring of His Revelation, hath everlastingly attained unto all good. Having reached this lofty station a twofold obligation resteth upon every soul. One is to be steadfast in the Cause with such steadfastness that were all the peoples of the world to attempt to prevent him from turning to the Source of Revelation, they would be powerless to do so. The other is observance of the divine ordinances which have streamed forth from the wellspring of His heavenly propelled Pen. For man’s knowledge of God cannot develop fully and adequately save by observing whatsoever hath been ordained by Him and is set forth in His heavenly Book.

Bahá’u’lláh 
www.bahai.org/r/725374666

This is not a Cause

This is not a Cause which may be made a plaything for your idle fancies, nor is it a field for the foolish and faint of heart. By God, this is the arena of insight and detachment, of vision and upliftment, where none may spur on their chargers save the valiant horsemen of the Merciful, who have severed all attachment to the world of being. These, truly, are they that render God victorious on earth, and are the dawning-places of His sovereign might amidst mankind.

The Kitáb-i-Aqdas
www.bahai.org/r/469846513