The Church received from the apostles the tradition of giving baptism even to infants. The apostles, to whom were committed the secrets of the divine sacraments, knew there are in everyone innate strains of [original] sin, which must be washed away through water and the Spirit
OrigenNow the true soldiers of Christ must always be prepared to do battle for the truth, and must never, so far as lies with them, allow false convictions to creep in.
OrigenWhat good does it do me if Christ was born in Bethlehem once if he is not born again in my heart through faith?
Origen