Revelation 7:9-10
After this I looked, and behold, a great multitude which no man could number, from every nation, from all tribes and peoples and tongues, standing before the throne and before the Lamb, clothed in white robes, with palm branches in their hands, and crying out with a loud voice, “Salvation belongs to our God who sits upon the throne, and to the Lamb!”
The Mass is called the Divine Liturgy because it is our participation–right now, here and on earth–in what is eternally going on in Heaven. The Son offers himself eternally to the Father and, with himself, all that is in him, which includes all creation itself. It is not our participation in that self-offering that makes it Holy and Divine, it is his. Apart from him you can do nothing. Today, receive the Eucharist and continue to be nourished by the Vine along with all the hosts of heaven and all the saints on earth.
