It is in the Eucharist that all that has been created finds its greatest exaltation…The Eucharist is the living center of the universe, the overflowing core of love and of inexhaustible life. Joined to the incarnate Son, present in the Eucharist, the whole cosmos gives thanks to God. Indeed the Eucharist is itself an act of cosmic love: “Yes, cosmic! Because even when it is celebrated on the humble altar of a country church, the Eucharist is always in some way celebrated on the altar of the world.” (Pope St. JPII) The Eucharist joins heaven and earth; it embraces and penetrates all creation. The world which came forth from God’s hands returns to him in blessed and undivided adoration… The Eucharist is a source of light and motivation for our concerns for the environment, directing us to be stewards of all creation.
On Sunday, our participation in the Eucharist has special importance. Sunday, like the Jewish Sabbath, is meant to be a day which heals our relationships with God, with ourselves, with others and with the world. Sunday is the day of the Resurrection, the “first day” of the new creation, whose first fruits are the Lord’s risen humanity, the pledge of the final transfiguration of all created reality. Sunday proclaims man’s eternal rest in God… The law of weekly rest forbade work on the seventh day, “so that your ox and your donkey may have rest, and the son of your maidservant, and the stranger, may be refreshed” (Ex 23:12). Rest opens our eyes to the larger picture and gives us renewed sensitivity to the rights of others. And so the day of rest, centered on the Eucharist, sheds its light on the whole week, and motivates us to greater concern for nature and the poor.
—Laudato Si’ 236-37