"There is none other God besides Him."

"And now, concerning thy question regarding the creation of man. Know thou that all men have been created in the nature made by God, the Guardian, the Self-Subsisting. Unto each one hath been prescribed a pre-ordained measure, as decreed in God’s mighty and guarded Tablets. All that which ye potentially possess can, however, be manifested only as a result of your own volition. Your own acts testify to this truth. Consider, for instance, that which hath been forbidden, in the Bayán, unto men. God hath in that Book, and by His behest, decreed as lawful whatsoever He hath pleased to decree, and hath, through the power of His sovereign might, forbidden whatsoever He elected to forbid. To this testifieth the text of that Book. Will ye not bear witness? Men, however, have wittingly broken His law. Is such a behavior to be attributed to God, or to their proper selves? Be fair in your judgment. Every good thing is of God, and every evil thing is from yourselves. Will ye not comprehend? This same truth hath been revealed in all the Scriptures, if ye be of them that understand. Every act ye meditate is as clear to Him as is that act when already accomplished. There is none other God besides Him. His is all creation and its empire. All stands revealed before Him; all is recorded in His holy and hidden Tablets. This fore-knowledge of God, however, should not be regarded as having caused the actions of men, just as your own previous knowledge that a certain event is to occur, or your desire that it should happen, is not and can never be the reason for its occurrence."

-Bahá'u'lláh, Gleanings From the Writings of Bahá’u’lláh, pp. 149-150 LXXVII

“He doeth whatsoever He willeth, and ordaineth that which He pleaseth.”

"The first and foremost duty prescribed unto men, next to the recognition of Him Who is the Eternal Truth, is the duty of steadfastness in His Cause. Cleave thou unto it, and be of them whose minds are firmly fixed and grounded in God. No act, however meritorious, did or can ever compare unto it. It is the king of all acts, and to this thy Lord, the All-Highest, the Most Powerful, will testify….

The virtues and attributes pertaining unto God are all evident and manifest, and have been mentioned and described in all the heavenly Books. Among them are trustworthiness, truthfulness, purity of heart while communing with God, forbearance, resignation to whatever the Almighty hath decreed, contentment with the things His Will hath provided, patience, nay, thankfulness in the midst of tribulation, and complete reliance, in all circumstances, upon Him. These rank, according to the estimate of God, among the highest and most laudable of all acts. All other acts are, and will ever remain, secondary and subordinate unto them….

The spirit that animateth the human heart is the knowledge of God, and its truest adorning is the recognition of the truth that “He doeth whatsoever He willeth, and ordaineth that which He pleaseth.” Its raiment is the fear of God, and its perfection steadfastness in His Faith. Thus God instructeth whosoever seeketh Him. He, verily, loveth the one that turneth towards Him. There is none other God but Him, the Forgiving, the Most Bountiful. All praise be to God, the Lord of all worlds."

- Bahá'u'lláh, Gleanings From the Writings of Bahá’u’lláh, pp. 290-291 CXXXIV

“On this Day the Kingdom is God’s!”

"The Pen of Revelation exclaimeth: “On this Day the Kingdom is God’s!” The Tongue of Power is calling: “On this Day all sovereignty is, in very deed, with God!” The Phoenix of the realms above crieth out from the immortal Branch: “The glory of all greatness belongeth to God, the Incomparable, the All-Compelling!” The Mystic Dove proclaimeth from its blissful bower, in the everlasting Paradise: “The source of all bounty is derived, in this Day, from God, the One, the Forgiving!” The Bird of the Throne warbleth its melody in its retreats of holiness: “Supreme ascendancy is to be attributed, this Day, to none except God, Him Who hath no peer nor equal, Who is the Most Powerful, the All-Subduing!” The inmost essence of all things voiceth in all things the testimony: “All forgiveness floweth, in this Day, from God, Him to Whom none can compare, with Whom no partners can be joined, the Sovereign Protector of all men, and the Concealer of their sins!” The Quintessence of Glory hath lifted up its voice above My head, and crieth from such heights as neither pen nor tongue can in any degree describe: “God is my witness! He, the Ancient of everlasting days is come, girded with majesty and power. There is none other God but Him, the All-Glorious, the Almighty, the All-Highest, the All-Wise, the All-Pervading, the All-Seeing, the All-Informed, the Sovereign Protector, the Source of eternal light!”

-Bahá'u'lláh, Gleanings From the Writings of Bahá’u’lláh, pp.35-36 XV

"There was even a time when men were wholly ignorant of the art of writing ..."

"And now regarding thy question, “How is it that no records are to be found concerning the Prophets that have preceded Adam, the Father of Mankind, or of the kings that lived in the days of those Prophets?” Know thou that the absence of any reference to them is no proof that they did not actually exist. That no records concerning them are now available, should be attributed to their extreme remoteness, as well as to the vast changes which the earth hath undergone since their time.

Moreover such forms and modes of writing as are now current amongst men were unknown to the generations that were before Adam. There was even a time when men were wholly ignorant of the art of writing, and had adopted a system entirely different from the one which they now use. For a proper exposition of this an elaborate explanation would be required.
Consider the differences that have arisen since the days of Adam. The divers and widely-known languages now spoken by the peoples of the earth were originally unknown, as were the varied rules and customs now prevailing amongst them. The people of those times spoke a language different from those now known. Diversities of language arose in a later age, in a land known as Babel. It was given the name Babel, because the term signifieth “the place where the confusion of tongues arose.”

Subsequently Syriac became prominent among the existing languages. The Sacred Scriptures of former times were revealed in that tongue. Later, Abraham, the Friend of God, appeared and shed upon the world the light of Divine Revelation. The language He spoke while He crossed the Jordan became known as Hebrew (Ibrání), which meaneth “the language of the crossing.” The Books of God and the Sacred Scriptures were then revealed in that tongue, and not until after a considerable lapse of time did Arabic become the language of Revelation….

-Bahá'u'lláh, Gleanings From the Writings of Bahá’u’lláh, pp. 173-174

" It behoveth you to ascertain whether or not such a light hath appeared."

"Shake off, O heedless ones, the slumber of negligence, that ye may behold the radiance which His glory hath spread through the world. How foolish are those who murmur against the premature birth of His light. O ye who are inly blind! Whether too soon or too late, the evidences of His effulgent glory are now actually manifest. It behoveth you to ascertain whether or not such a light hath appeared. It is neither within your power nor mine to set the time at which it should be made manifest. God’s inscrutable Wisdom hath fixed its hour beforehand. Be content, O people, with that which God hath desired for you and predestined unto you…."

-Bahá'u'lláh, Gleanings From the Writings of Bahá’u’lláh, p. 103 L

" ... that the leaders of men in every land may fully recognize the purpose .."

"All men have been created to carry forward an ever-advancing civilization. The Almighty beareth Me witness: To act like the beasts of the field is unworthy of man. Those virtues that befit his dignity are forbearance, mercy, compassion and loving-kindness towards all the peoples and kindreds of the earth. Say: O friends! Drink your fill from this crystal stream that floweth through the heavenly grace of Him Who is the Lord of Names. Let others partake of its waters in My name, that the leaders of men in every land may fully recognize the purpose for which the Eternal Truth hath been revealed, and the reason for which they themselves have been created."

-Bahá'u'lláh, Gleanings From the Writings of Bahá’u’lláh, p. 215

"This indeed is the true meaning of Divine Unity ... "

"Beware, O believers in the Unity of God, lest ye be tempted to make any distinction between any of the Manifestations of His Cause, or to discriminate against the signs that have accompanied and proclaimed their Revelation. This indeed is the true meaning of Divine Unity, if ye be of them that apprehend and believe this truth. Be ye assured, moreover, that the works and acts of each and every one of these Manifestations of God, nay whatever pertaineth unto them, and whatsoever they may manifest in the future, are all ordained by God, and are a reflection of His Will and Purpose. Whoso maketh the slightest possible difference between their persons, their words, their messages, their acts and manners, hath indeed disbelieved in God, hath repudiated His signs, and betrayed the Cause of His Messengers."

-Bahá'u'lláh, Gleanings From the Writings of Bahá’u’lláh, pp. 59-60 XXIV