66. The celebrant who presides5 and presents the ecclesial meaning of the marriage commitment for the assembly, will try to involve those who are being married, together with their relatives and the witnesses, so that they can comprehend the structure of the rite. This applies especially to the most characteristic parts, such as: the Word of God, the consent exchanged and ratified, the blessing of the signs that symbolize marriage (rings etc.), the solemn blessing of the spouses, the reference to the spouses in the heart of the Eucharistic Prayer. "The various liturgies abound in prayers of blessing and epiclesis asking God's grace and blessing on the new couple, especially the bride." (Catechism of the Catholic Church, n. 1624). It will also be necessary to explain the gesture of imposing hands on the "subject ministers" of the sacrament. Standing, the sign of peace or other rites determined by the competent authorities, etc. will be appropriately brought to the attention of all present.