Glee Season 2 Episode 3 (Glee s02e03) with title “Grilled Cheesus” aired on Tuesday, October 5th 2010 at 08:00 pm via FOX Network.
Here is summary for Glee Season 2 Episode 3 :

Finn has an existential crisis when he sees the face of Jesus in a grilled-cheese sandwich, or thinks he does. Meanwhile, the glee kids engage in a theological discussion after rallying around Kurt when he faces a crisis of his own.