Sign of god or symptom of hallucinogens, the object that lives inside its own burning is a theme beloved by painters but no longer limited to them. Starting in the 1970s and gaining ground in the new century, artists in a range of other media have made it their own.
Ryan Mrozowski, suggested by BeFruitful&Multiply:
Kevin Schmidt, suggested by dvnms
Lauren Grossman, Not Consumed, suggested by Billy Howard. (I should have thought of this one, since I reviewed the dang show.)
Ana Mendieta, suggested by Sharon Arnold
James Lavadour, suggested by Harold Hollingsworth
Charles Linder , suggested by IMALEADER
Richard Misrach 
Charles LaBelle
Cai again
Harrell Fletcher: consuming fire as relational aesthetics
Claude Zervas: His bears prevent forest fires by eating them
Alice Wheeler: motel sign as burning bush
Ana Mendieta, “Anima, Silueta de Cohetes”
Not necessarily a burning bush, but of the earth and womanhood and presence.
http://howardhouse.net/artists/grossman/HH03002.html
Regina – title of Lauren’s show “Not Consumed” which you covered briefly in your old job: http://www.seattlepi.com/visualart/263247_visual17.html
Vibrating here.
Kevin Schmidt
Burning Bush, 2005
HD DVD
05:03:15
Better than Misrach: Friedlander’s book “The Desert Seen”
Zack Bent has a piece at Gallery4culture currently.
you can see a section of it here:
http://www.4culture.org/publicart/gallery/
James Lavadour