Expiration date and the new world:
I found this in Gleanings but it is also in The Century of Light:
Gleanings From the Writings of Baha’u’llah, Pages 27-35: gr4
Century of Light, Pages 137-160: gr23
“Canst thou discover any one but Me, O Pen, in this Day? What hath become of the creation and the manifestations thereof? What of the names and their kingdom? Whither are gone all created things, whether seen or unseen? What of the hidden secrets of the universe and its revelations? Lo, the entire creation hath passed away! Nothing remaineth except My Face, the Ever-Abiding, the Resplendent, the All-Glorious.
This is the Day whereon naught can be seen except the splendors of the Light that shineth from the face of Thy Lord, the Gracious, the Most Bountiful. Verily, We have caused every soul to expire by virtue of Our irresistible and all-subduing sovereignty. We have, then, called into being a new creation, as a token of Our grace unto men. I am, verily, the All-Bountiful, the Ancient of Days.”