There was hope in Madrid that the Netherlands might finally be reincorporated into the Empire, and after the defeat of Denmark the Protestants in Germany seemed crushed. France was once again involved in her own instabilities (the famous Siege of La Rochelle began in 1627), and Spain's eminence seemed clear. The Count-Duke Olivares stridently affirmed, "God is Spanish and fights for our nation these days".
https://en.wikipedia.org/wiki/Spanish_Empire#.22God_is_Spanish.22_.281596.E2.80.931626.29