December 19

The Covenant of Bahá'u'lláh is unbroken, its all- encompassing power inviolate. The two unique features which distinguish it from all religious covenants of the past are unchanged and operative. The revealed Word, in its original purity, amplified by the divinely guided interpretations of 'Abdu'l-Bahá and Shoghi Effendi, remains immutable, unadulterated by any man-made creeds or dogmas, unwarrantable inferences, or unauthorized interpretations. The channel of Divine guidance, providing flexibility in all the affairs of mankind, remains open through that institution which was founded by Bahá'u'lláh and endowed by Him with supreme authority and unfailing guidance, and of which the Master wrote: "Unto this body all things must be referred." How clearly we can see the truth of Bahá'u'lláh's assertion: "The Hand of Omnipotence hath established His Revelation upon an enduring foundation. Storms of human strife are powerless to undermine its basis, nor will men's fanciful theories succeed in damaging its structure."  
- The Universal House of Justice  (From a letter dated October 1963, published in "Wellspring of Guidance: Messages 1963-1968”; The Compilation of Compilations, vol. I, The Covenant)