What gave to the Spanish Inquisition its peculiar and terrible efficiency were the completeness of its organization and its combination of the mysterious authority of the Church with the secular power of the crown. The old Inquisition was purely an ecclesiastical institution, empowered, it is true, to call upon the State for aid and for the execution of its sentences, but throughout Christendom the relations between Church and State were too often antagonistic for its commands always to receive obedience. In Spain, however, the Inquisition represented not only the pope but the king; it practically wielded the two swords--the spiritual and the temporal--and the combination produced a tyranny, similar in character, but far more minute and all-pervading, to that which England suffered during the closing years of Henry VIII as Supreme Head of the Church. While thus its domination over the people was secure and unvarying, its relations with the royal power varied with the temperament of the sovereign. At times it was the instrument of his will; at others it seemed as though it might almost supplant the monarchy; it was constantly seeking to extend its awful authority over the other departments of State, which struggled with varying success to resist its encroachments, while successive kings, autocratic in theory, sometimes posed as arbitrators, sometimes vainly endeavored to enforce their pacificatory commands, but more generally yielded to its domineering spirit. * * * * * [Sidenote: _FERDINAND'S CONTROL_]