While weddings had already been celebrated in temples during the Roman Republic, after the Empire became predominantly Christian in the fourth century CE, Christians held their celebrations inside their churches; these celebrations marked both their religious rite of matrimony as well as a civil contract.
Church weddings became even more important after Emperor Justinian I (r. 527–565) decreed that, as part of efforts to strengthen state control over society, only church weddings with blessings from priests were legally recognized by the Byzantine state.