This opera ends after an idol of Baal is broken, and a notable piece in this opera begins "Va, pensiero.
One character in this opera sings an aria beginning "Like darkness before the sun."  Ismaele is a prince in this opera, which also features the characters Abigaille and the daughter of the title character, (*) Fenena.  This opera ends after an idol of Baal is broken, and a notable piece in this opera begins "Va, pensiero." For ten points, identify this opera composed by Giuseppe Verdi about the escape of the Hebrew slaves, who have a namesake chorus, from the titular Babylonian king.
One character in this opera sings an aria beginning "Like darkness before the sun."  
{Nabucco} (also accept {Nebuchadnezzer})