Prayer from the Marriage Service
Protestant
O eternal God, Creator and Preserver of all mankind, Giver of all spiritual grace, the Author of everlasting life: Send thy blessing upon these thy servants, this man and this woman, whom we bless in thy Name; that, as Isaac and Rebecca lived faithfully together, so these persons may surely perform and keep the vow and covenant betwixt them made, (whereof this ring given and received is a token and pledge,) and may ever remain in perfect love and peace together, and live according to thy laws; through Jesus Christ our Lord. Amen.
Source: St Bartholomew the Great