"“God is love, and he who abides in love abides in God, and God abides in him” (1 Jn 4:16). These words from the First Letter of John express with remarkable clarity the heart of the Christian faith: the Christian image of God and the resulting image of mankind and its destiny.
Jesus united into a single precept this commandment of love for God and the commandment of love for neighbour found in the Book of Leviticus: “You shall love your neighbour as yourself” (19:18; cf. Mk 12:29-31). Since God has first loved us (cf. 1 Jn 4:10), love is now no longer a mere “command”; it is the response to the gift of love with which God draws near to us.
In a world where the name of God is sometimes associated with vengeance or even a duty of hatred and violence, this message is both timely and significant."
Pope Benedict XVI