f501dbc2_rical_and_Theological_Analysis__2
[0] III. [2] 
The religious knowledge required of a child for suitable preparation before first Communion is the following. He should understand, according to his ability, the mysteries of faith necessary for salvation, and be sufficiently able to distinguish the Eucharistic from ordinary corporeal bread, to approach the most holy Eucharist with such devotion as can be expected at his age.
Fr. Hardon Archives - First Confession: An Historical and Theological Analysis
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