God the Father, who is absolutely faithful to His eternal love for man, since He "so loved the world" - therefore man in the world-that "he gave his only Son, that whoever believes in him should not perish but have eternal life.” (J 3,16) Believing in the crucified Son means "seeing the Father," (see J 14, 9) means believing that love is present in the world and that this love is more powerful than any kind of evil in which individuals, humanity, or the world are involved. Believing in this love means believing in mercy. For mercy is an indispensable dimension of love; it is as it were love's second name and, at the same time, the specific manner in which love is revealed and effected vis-a-vis the reality of the evil that is in the world, affecting and besieging man, insinuating itself even into his heart and capable of causing him to "perish in Gehenna." (Mt 10,28).
Jesus Christ taught that man not only receives and experiences the mercy of God, but that he is also called "to practice mercy" towards others: "Blessed are the merciful, for they shall obtain mercy." (Mt 5, 7) The Church sees in these words a call to action, and she tries to practice mercy. All the beatitudes of the Sermon on the Mount indicate the way of conversion and of reform of life, but the one referring to those who are merciful is particularly eloquent in this regard. Man attains to the merciful love of God, His mercy, to the extent that he himself is interiorly transformed in the spirit of that love towards his neighbor.
This authentically evangelical process is not just a spiritual transformation realized once and for all: it is a whole lifestyle, an essential and continuous characteristic of the Christian vocation. It consists in the constant discovery and persevering practice of love as a unifying and also elevating power despite all difficulties of a psychological or social nature: it is a question, in fact, of a merciful love which, by its essence, is a creative love. In reciprocal relationships between persons merciful love is never a unilateral act or process. Even in the cases in which everything would seem to indicate that only one party is giving and offering, and the other only receiving and taking (for example, in the case of a physician giving treatment, a teacher teaching, parents supporting and bringing up their children, a benefactor helping the needy), in reality the one who gives is always also a beneficiary. In any case, he too can easily find himself in the position of the one who receives, who obtains a benefit, who experiences merciful love; he too can find himself the object of mercy.
The Church proclaims the truth of God's mercy revealed in the crucified and risen Christ, and she professes it in various ways. Furthermore, she seeks to practice mercy towards people through people, and she sees in this an indispensable condition for solicitude for a better and "more human" world, today and tomorrow. However, at no time and in no historical period-especially at a moment as critical as our own-can the Church forget the prayer that is a cry for the mercy of God amid the many forms of evil which weigh upon humanity and threaten it. Precisely this is the fundamental right and duty of the Church in Christ Jesus, her right and duty towards God and towards humanity. The more the human conscience succumbs to secularization, loses its sense of the very meaning of the word "mercy," moves away from God and distances itself from the mystery of mercy, the more the Church has the right and the duty to appeal to the God of mercy "with loud cries." (see Hbr 5, 7) These "loud cries" should be the mark of the Church of our times, cries uttered to God to implore His mercy, the certain manifestation of which she professes and proclaims as having already come in Jesus crucified and risen, that is, in the Paschal Mystery. It is this mystery which bears within itself the most complete revelation of mercy, that is, of that love which is more powerful than death, more powerful than sin and every evil, the love which lifts man up when he falls into the abyss and frees him from the greatest threats.