In the type of bread his body is given to you, and in the type of wine his blood is given to you, so that by partaking of the body and blood of Christ you may be one body and one blood with him also. For thus also we become bearers of Christ, because his body and blood are distributed throughout our members. Thus, according to the blessed Peter, "we become partakers of the divine nature” [2 Peter 1:4].
CYRIL OF JERUSALEM Mystagogical Catechesis 4.3