Reading the books of Moses for the first reading at Holy Mass these days… Reading our Holy Father’s encyclical…
It all comes together in paragraph 12:
The history of the people of Israel in the Book of Exodus follows in the wake of Abraham’s faith.
Faith once again is born of a primordial gift: Israel trusts in God, who promises to set his people free from their misery. Faith becomes a summons to a lengthy journey leading to worship of the Lord on Sinai and the inheritance of a promised land.
God’s love is seen to be like that of a father who carries his child along the way. Israel’s confession of faith takes shape as an account of God’s deeds in setting his people free and acting as their guide, an account passed down from one generation to the next.
God’s light shines for Israel through the remembrance of the Lord’s mighty deeds, recalled and celebrated in worship, and passed down from parents to children.
Here we see how the light of faith is linked to concrete life-stories, to the grateful remembrance of God’s mighty deeds and the progressive fulfillment of his promises.
Gothic architecture gave clear expression to this: in the great cathedrals light comes down from heaven by passing through windows depicting the history of salvation. God’s light comes to us through the account of his self-revelation, and thus becomes capable of illuminating our passage through time by recalling his gifts and demonstrating how he fulfills his promises.