JLA: Act of God is a three issue limited series published by DC Comics under the Elseworlds banner in 2000. It is written by Doug Moench and illustrated by Dave Ross.
The story is a psychological look at what could happen to many superheroes if their powers were taken away by an unseen natural event, and has them pondering whether it is right for them to have powers in the first place.
Their powers gone, their lives irrevocably changed, the once super-powered heroes of Earth struggle to retain their grasps on life, love, and in some cases, even sanity. But while the JLA members confront their personal demons, the villain known as Lex Luthor reigns as strong as ever, and is threatening not only all of "normal" humanity, but the seemingly helpless heroes as well.