Where does that leave polytheists then?
Every man of insight will, in this day, readily admit that the counsels which the Pen of this Wronged One hath revealed constitute the supreme animating power for the advancement of the world and the exaltation of its peoples. Arise, O people, and, by the power of God’s might, resolve to gain the victory over your own selves, that haply the whole earth may be freed and sanctified from its servitude to the gods of its idle fancies—gods that have inflicted such loss upon, and are responsible for the misery of their wretched worshippers. These idols form the obstacle that impedeth man in his efforts to advance in the path of perfection. We cherish the hope that the Hand of divine power may lend its assistance to mankind and deliver it from its state of grievous abasement.
Tablet of the World -- Baha'u'llah
Blessed is that strong one who will shatter the gods of vain imaginings through the potency of the Name of his Lord, He Who ruleth over all men.
Baha'u'llah
And now concerning thy reference to the existence of two Gods. Beware, beware, lest thou be led to join partners with the Lord, thy God. He is, and hath from everlasting been, one and alone, without peer or equal, eternal in the past, eternal in the future, detached from all things, ever-abiding, unchangeable, and self-subsisting. He hath assigned no associate unto Himself in His Kingdom, no counsellor to counsel Him, none to compare unto Him, none to rival His glory. To this every atom of the universe beareth witness, and beyond it the inmates of the realms on high, they that occupy the most exalted seats, and whose names are remembered before the Throne of Glory.
Gleamings from the Writings of Baha'u'llah
The meaning is that the Buddhists and Confucianists now worship images and statues. They are entirely heedless of the Oneness of God and believe in imaginary gods like the ancient Greeks. But in the beginning it was not so; there were different principles and other ordinances.
Some Answered Questions