"O Temple of My Cause! Say: Should I wish to transform, in a single moment, all things into mirrors of My Names, this undoubtedly is in My power, how much more in the power of My Lord, Who hath called Me into being through His all-compelling and inscrutable command. And should I choose to revolutionize the entire creation in the twinkling of an eye, this assuredly is possible unto Me, how much more unto that sovereign Purpose enshrined in the Will of God, My Lord and the Lord of all the worlds.
Say: O ye manifestations of My Names! Should ye offer up all that ye possess, nay your very lives, in the path of God, and invoke Him to the number of the grains of sand, the drops of rain, and the waves of the sea, and yet oppose the Manifestation of His Cause at the time of His appearance, your works shall in no wise be mentioned before God. Should ye, however, neglect all righteous works and yet choose to believe in Him in these days, God perchance will put away your sins. He, verily, is the All-Glorious, the Most Bountiful. Thus doth the Lord inform you of His purpose, that haply ye may not wax proud before the One through Whom whatsoever hath been revealed from all eternity hath been confirmed. Happy is he who approacheth this Most Sublime Vision, and woe to them that turn aside!
How numerous those who expend all their wealth in the path of God, and whom We find, at the hour of His Revelation, to be of the rebellious and the froward! How many those who keep the fast in the daytime, only to protest against the One by Whose very command the ordinance of the fast was first established! Such men are, in truth, of the ignorant. And how many those who subsist on the coarsest bread, who take for their only seat the grass of the field, and who undergo every manner of hardship, merely to maintain their superiority in the eyes of men! Thus do We expose their deeds, that this may serve as a warning unto others. These are the ones who subject themselves to all manner of austerities before the gaze of others in the hope of perpetuating their names, whilst in reality no mention shall remain of them save in the curses and imprecations of the dwellers of earth and heaven."
-Bahá'u'lláh,
The Summons of the Lord of Hosts, Súriy-i-Haykal, pp. 45-46
Ahmed Mater