What is the role of a priest or deacon in the sacrament of matrimony?

In the sacrament of matrimony, a priest or deacon serves as a witness to the marriage vows exchanged between the couple, ensuring that the ceremony adheres to the Church's teachings. They also provide guidance and support to the couple, helping them understand the spiritual significance of marriage. Additionally, the priest or deacon may lead the liturgical aspects of the ceremony, invoking God's blessing on the union.