According to Osho, revival is possible only in a very different sense: if someone merely appears dead—due to deep trance, coma, or suspended life functions—they can return; but once the body is truly dead, revival is impossible. Many so-called resurrections are misunderstandings of near-death or meditative states where vital signs are undetectable.
You can only ‘wake’ someone who looks dead but isn’t; if the body has truly stopped, no one can bring them back.