Juan Antonio Martinez Camino, outgoing spokesman and general secretary for Spain's Episcopal Conference, has declared that the nation's gay marriage law has destroyed marriage for all.

Gay couples gained the right to marry in 2005 under the socialist government of Jose Luis Rodriguez Zapatero, who called the legislation a great achievement.

(Related: Spain's Jose Zapatero says he's proudest of gay marriage on his way out.)

Speaking on Cadena Ser radio, Martinez Camino argued that “the law has destroyed marriage” insisting that “I wish there was a homosexual marriage law. What that law has done is destroy marriage for all.” Changing the nation's laws on marriage, he said, “is more serious than changing from Monarchy to Republic.”

He added that Pope Francis, before he was elected pontiff, called the law “an act of Satan” in 2010.

While the law remains on the books, Spain's current prime minister, Mariano Rajoy, and his conservative Popular Party (PP) have challenged its constitutionality in court and lost.

Martinez Camino steps down from his post on November 20.