The Almighty paid no attention to him, of course
Some time ago, an infidel got up in the presence of some atheistic companions, and defied the God of heaven to show Himself in battle. He swung his sword to and fro, and challenged the Almighty to meet him in single combat.
The Almighty paid no attention to him, of course — but He just commissioned a little gnat, so small that it could scarcely be seen, to lodge in his windpipe and choke him to death!
"The fool says in his heart, 'There is no God.' They are corrupt, their deeds are vile." Psalm 14:1