The Eastern Orthodox Church, Oriental Orthodoxy and the Assyrian Church of the East also insist on the need to have infants baptised as soon as is practicable after birth. Similar to the Roman Catholic Church, they teach that baptism is not merely a symbol but actually conveys grace. Baptism is a sacrament because it is an "instrument" instituted by Jesus Christ to impart grace to its recipients. Infants are traditionally baptised on the eighth day, recalling the biblical injunction to circumcise on the eighth day. However, this is not mandatory. In many of these churches, the Sacred Mystery of Chrismation (Confirmation) is administered by the priest immediately after baptism. Holy Communion, in the form of consecrated wine and bread, is also given to infants after they are baptised.