God does not simply have the desire or capacity to love; God is love: charity is His essence, it is His nature. He is unique, but not solitary; ... He cannot be closed in on Himself because He is communion, He is charity; and charity by its nature is communicated and shared. In this way, God associates man to His life of love, and even if man turns away from Him, God does not remain distant but goes out to meet him. This going out to meet us, culminating in the Incarnation of His Son, is His mercy.

--Pope Francis, Address to participants in the international congress on the encyclical "Deus Caritas est" of Benedict xvi on the tenth anniversary of its publication, February 26, 2016