Communion (the holy Eucharist) may only be received by baptized Catholics who are not aware of any unconfessed actual mortal sins. Reception of this Sacrament is a sign of unity with other Catholics within the teachings and practices of the Catholic Faith. Those who obstinately doubt or deny any of the required beliefs of the Catholic faith are not permitted to receive this Sacrament (cf. Canon Law 751, 1364). When consecrated, the bread and wine of the holy Eucharist becomes literally the body and blood of Jesus Christ, such that all of Christ is present: His human nature and His Divine Nature, united in One Divine Person.