1. "Signs" of the divine omnipotence and saving power of the Son of man, Christ's miracles, narrated by the Gospels, are also the revelation of God's love for man, particularly for man who suffers, who is in need, who begs for healing, forgiveness and mercy. They are therefore 'signs' of the merciful love proclaimed by the Old and New Testaments (cf. Ioannis Pauli PP. II, Dives in Misericordia). Especially the Gospel reading makes us understand and almost "feel" that Jesus' miracles have their source in the loving and merciful heart of God, which lives and vibrates in his own human heart. Jesus performs them to overcome every kind of evil that exists in the world: physical evil, moral evil, that is, sin, and finally the one who is the "father of sin" in human history: Satan.
The miracles are therefore 'for man'. They are works of Jesus that, in harmony with the redemptive purpose of his mission, re-establish goodness where evil has lurked, producing disorder and turmoil. Those who receive them, who witness them, realise this fact, so much so that according to Mark, "filled with astonishment, they said, 'He has done all things well; He makes the deaf hear and the dumb speak!'" (Mk 7:37).
5. In the very manner in which he performed the miracles, one can see the great simplicity and one could say humility, gentleness of Jesus' traits. How much the words that accompanied the resurrection of the daughter of Jairus make us think from this point of view: "The child is not dead, but asleep" (Mk 5:39), as if to "soften" the significance of what he was about to do. And then: 'he insisted that no one should find out about it' (Mk 5:43). He also did this in other cases, for example after the healing of a deaf-mute (Mk 7:36), and after Peter's profession of faith (Mk 8:29-30).
To heal the deaf-mute it is significant that Jesus took him "away from the crowd". There "looking . . . towards heaven, he uttered a sigh". This 'sigh' seems to be a sign of compassion and, at the same time, a prayer. The word "Effatà" ("Open up!") causes "the ears" to be opened and the "knot of the tongue" of the deaf-mute to be loosened (cf. Mk 7:33-35).
[Pope John Paul II, General Audience 9 December 1987]