"Then, and only then, will the Divine Standard be unfurled, and the Nightingale of Paradise warble its melody.”

“The days are approaching their end, and yet the peoples of the earth are seen sunk in grievous heedlessness, and lost in manifest error.” “Great, great is the Cause! The hour is approaching when the most great convulsion will have appeared. I swear by Him Who is the Truth! It shall cause separation to afflict everyone, even those who circle around Me.” “Say: O concourse of the heedless! I swear by God! The promised day is come, the day when tormenting trials will have surged above your heads, and beneath your feet, saying: ‘Taste ye what your hands have wrought!’” “The time for the destruction of the world and its people hath arrived. He Who is the Pre-Existent is come, that He may bestow everlasting life, and grant eternal preservation, and confer that which is conducive to true living.” “The day is approaching when its [civilization’s] flame will devour the cities, when the Tongue of Grandeur will proclaim: ‘The Kingdom is God’s, the Almighty, the All-Praised!’” “O ye that are bereft of understanding! A severe trial pursueth you, and will suddenly overtake you. Bestir yourselves, that haply it may pass and inflict no harm upon you.” “O ye peoples of the world! Know, verily, that an unforeseen calamity is following you, and that grievous retribution awaiteth you. Think not the deeds ye have committed have been blotted from My sight.” “O heedless ones! Though the wonders of My mercy have encompassed all created things, both visible and invisible, and though the revelations of My grace and bounty have permeated every atom of the universe, yet the rod with which I can chastise the wicked is grievous, and the fierceness of Mine anger against them terrible.” “Grieve thou not over those that have busied themselves with the things of this world, and have forgotten the remembrance of God, the Most Great. By Him Who is the Eternal Truth! The day is approaching when the wrathful anger of the Almighty will have taken hold of them. He, verily, is the Omnipotent, the All-Subduing, the Most Powerful. He shall cleanse the earth from the defilement of their corruption, and shall give it for an heritage unto such of His servants as are nigh unto Him.” “Soon will the cry, ‘Yea,  yea, here am I, here am I’ be heard from every land. For there hath never been, nor can there ever be, any other refuge to fly to for anyone.” “And when the appointed hour is come, there shall suddenly appear that which shall cause the limbs of mankind to quake. Then, and only then, will the Divine Standard be unfurled, and the Nightingale of Paradise warble its melody.”

-Bahá’u’lláh, Quoted in The Advent of Divine Justice, p.77