Through these wounds, as in a light-filled opening, we can see the entire mystery of Christ and of God: his Passion, his earthly life – filled with compassion for the weak and the sick – his incarnation in the womb of Mary. And we can retrace the whole history of salvation: the prophecies – especially about the Servant of the Lord, the Psalms, the Law and the Covenant; to the liberation from Egypt, to the first Passover and to the blood of the slaughtered lambs; and again from the Patriarchs to Abraham, and then all the way back to Abel, whose blood cried out from the earth. All of this we can see in the wounds of Jesus, crucified and risen; with Mary, in her Magnificat, we can perceive that, “His mercy extends from generation to generation” (cf. Lk 1:50).
-Pope Francis, homily for Divine Mercy Sunday 2015