Baptism
Meaning and effects
The discipline of the Eastern Orthodox Church, Oriental Orthodoxy and the Assyrian Church of the East is similar to that of the Eastern Catholic Churches. They require the baptizer, even in cases of necessity, to be of their own faith, on the grounds that a person cannot convey what he himself does not possess, in this case membership in the Church. The Latin Catholic Church does not insist on this condition, considering that the effect of the sacrament, such as membership of the Church, is not produced by the person who baptizes, but by the Holy Spirit. For the Orthodox, while Baptism in extremis may be administered by a deacon or any lay-person, if the newly baptized person survives, a priest must still perform the other prayers of the Rite of Baptism, and administer the Mystery of Chrismation.
Baptism-59