The Liturgy is the hearing and proclamation of the Word of God, before the celebration of the Sacraments. The reformation has already begun because the readings of the old and the new books (Missal - Breviary...) should not wait long for the reformation (ongoing) so that the words used do not become outdated. Experts change them... Catechism on the renewal of the Liturgy, with P. Randriamanamahenina Robert Marie.