There are three other texts for dismissal that are new in the third edition of the Roman Missal. The bishops at the 2005 Synod on the Eucharist had proposed that, in order to “make more explicit the relationship between Eucharist and mission … new dismissal formulas be prepared … which underline the mission in the world of the faithful who have participated in the Eucharist.” Pope Benedict XVI approved this suggestion and selected three new formulas for dismissal.Living the Mass in our daily lives is what the second new dismissal text is about:
Go in peace, glorifying the Lord by your life. Lk 5:25; 1 Cor 6:20The lay faithful exercise their baptismal priesthood primarily by sanctifying the world from within. The laity have a vocation to holiness in their everyday lives, as the Second Vatican Council made clear in its document on the lay apostolate:
They exercise the apostolate in fact by their activity directed to the evangelization and sanctification of men and to the penetrating and perfecting of the temporal order through the spirit of the Gospel. In this way, their temporal activity openly bears witness to Christ and promotes the salvation of men. Since the laity, in accordance with their state of life, live in the midst of the world and its concerns, they are called by God to exercise their apostolate in the world like leaven, with the ardor of the Spirit of Christ. (Apostolicam Actuositatem 2)Jesus told His disciples not to do good deeds “before men in order to be seen by them.” (Mt 6:1) At the same time, He told them to let their light shine before men “that they may see your good works and give glory to your Father who is in heaven.” (Mt 5:16) These might sound contradictory: should others see our good deeds or not? The answer is that we should do our good deeds to glorify God and not worry about who sees them, so that if (and when) others see them, they too will glorify God and not us.
There is no “liturgy” in the world, at least not like there is in the Church. So we must go and live the liturgy: we must bring contrition, adoration, petition, and thanksgiving into the world. Our daily lives should be a witness to the love of God in Jesus Christ in every word and deed. This is how we can fulfill our apostolic and evangelical mission, glorifying the Lord. (Apostolicam Actuositatem 6)