I believe this is "Wang's Carpets" by Greg Egan, a story that formed the basis for the later novel Diaspora.
It was published in the New Legends anthology edited by Greg Bear.
Human consciousness is now running in software, and have been travelling the universe seeking other life. They find a waterworld with large "carpets" moving slowly through the ocean. ...
The short story is Mobius Trip by Janny Wurtz.
Featuring an aging mirror-maker who is asked to create a mirror which acts like a moebius strip and shows a reflection of the past and the future.
This story appeared in Elemental: The Tsunami Relief Anthology: Stories of Science Fiction and Fantasy and was donated to fund that relief effort.
Any chance that story is the novella "The Calvin Coolidge Home for Dead Comedians" by Bradley Denton, republished in both his collection of that name and his collection One Day Closer to Death? There's no quest for God in that story, but, quoting Wikipedia's summary,
In the afterlife, Leonard finds himself confined to the
Calvin Coolidge Home for Dead ...