We can see the missionary thrust of the liturgical reform in the acceptance of the vernacular and the increased sensitivity to local cultures and customs (SC 37). When the [Second Vatican] council portrays the liturgy as “the summit toward which the activity of the church is directed; as the same it is the fountain from which all her power flows” (SC 10), it is making, according to [Stephen] Bevans, a profound missionary statement. The liturgy is not to be a graced refuge from the world but a ritual celebration of our being sent forth from the eucharistic liturgy into the world in service of God’s reign.
Richard R. Gaillardetz, An Unfinished Council: Vatican II, Pope Francis, and the Renewal of Catholicism (Collegeville, MN: Liturgical Press, 2015), p. 90. ISBN: 978-0-8146-8309-5.