I think sometimes when we discuss the liturgy, we can give the impression that the eschatological reality that is the Church "happens" only in the liturgical assembly around the Words of God read and preached and the Holy Eucharist celebrated. But this is a very grave misunderstanding.
The Church as eschatological reality does not exist solely in the Eucharistic Assembly. Rather, her particular mode of existence in Eucharistic assembly is the source of her strength for her perpetual task in this world: the invasion. We are part of an alien invasion, make no bones about it. We are here to rescue as many "earthlings" as we can for the joys of that heavenly life that we certainly taste in Eucharistic assembly - our secret "visit home" each week. Strengthened to orient our lives toward the unseen realities that our Master Invader has revealed to us, He sends us out to BE His Church in this world.
A friend of mine used to speak of Church gathered and Church scattered. Perhaps we should say: Church assembled and Church deployed. Deployed by the Master Invader, pulsing with His divine life, and dispatched into this world to BE to the praise of His glory, to show in this world a way of life that is utterly freed from the terror of death, from the power of hatred, fueled by a love so astonishing, by a life so indestructible, that it shines and draws the mere earthlings to itself.
Each time Pre-Lent and Lent swing around, it is the Church's corporate confession that we haven't very well lived that way. It's not that the new life has not been richly dumped on us in the Divine Service, but that we've failed in the deployment. We've failed to orient our lives toward that Easter life that Baptism made our own and that the Eucharist weekly renews in us. And each year, it is the opportunity to become in this world, who He has both declared and made us to be when He brought our lives under His sway. So that Church isn't a point. It's not what happens merely when assembled, but becomes who we are when we're taking out the trash, working out at the Y, dining out, finishing the project, sawing the beam or writing the contract. We do all the stuff of this world as Church, as those who have been brought back from death to life and whose sins are simply buried under the blood of the Cross.
"You shall be my witnesses." It's not a command. It's a promise.