Sobre o título da primeira encíclica papal de Bento XVI: Deus É Amor.
The Latin title of an encyclical is taken from its first few words. This encyclical begins with a quotation from the First Letter of St. John, chapter 4, verse 16 (for example, the Vulgate) translated from the original Greek, "ὁ θεòς ἀγάπη ἐστίν" (ho theos agape estin). The Douai Bible translates this into English as "God is charity" while in most contemporary English translations it reads "God is love" (since the word "charity" is derived from the Latin caritas, or "love").
The Latin version of the First Letter of St. John uses the same formulation, "Deus caritas est", at the end of chapter 4, verse 8, translating the same phrase in Greek. (Wikipedia)