The Day of the Covenant

"The first condition is firmness in the Covenant of God. For the power of the Covenant will protect the Cause of Bahá’u’lláh from the doubts of the people of error. It is the fortified fortress of the Cause of God and the firm pillar of the religion of God. Today no power can conserve the oneness of the Bahá’í world save the Covenant of God; otherwise differences like unto a most great tempest will encompass the Bahá’í world. It is evident that the axis of the oneness of the world of humanity is the power of the Covenant and nothing else. Had the Covenant not come to pass, had it not been revealed from the Supreme Pen and had not the Book of the Covenant, like unto the ray of the Sun of Reality, illuminated the world, the forces of the Cause of God would have been utterly scattered and certain souls who were the prisoners of their own passions and lusts would have taken into their hands an axe, cutting the root of this Blessed Tree. Every person would have pushed forward his own desire and every individual aired his own opinion! Notwithstanding this great Covenant, a few negligent souls galloped with their chargers into the battlefield, thinking perchance they might be able to weaken the foundation of the Cause of God: but praise be to God, all of them were afflicted with regret and loss, and ere long they shall see themselves in poignant despair. Therefore, in the beginning one must make his steps firm in the Covenant—so that the confirmations of Bahá’u’lláh may encircle from all sides, the cohorts of the Supreme Concourse may become the supporters and the helpers, and the exhortations and advices of ‘Abdu’l-Bahá, like unto the pictures engraved on stone, may remain permanent and ineffaceable in the tablets of the hearts."

‘Abdu’l-Bahá, Bahá’í World Faith—Selected Writings of Bahá’u’lláh and ‘Abdu’l-Bahá, pp. 425-426