The Code of Canon Law, No 907 is more explicit “In the eucharistic celebration deacons and lay persons are not permitted to offer prayers, especially the eucharistic prayer, or to perform actions which are proper to the celebrating priest.”
Ecclesiae de mysterio, a document put out by the Church in 1997 states:
“To promote the proper identity (of various roles) in this area, those abuses which are contrary to the provisions of canon 907 are to be eradicated. In eucharistic celebrations deacons and non-ordained members of the faithful may not pronounce prayers – e.g. especially the eucharistic prayer, with its concluding doxology – or any other parts of the liturgy reserved to the celebrant priest. Neither may deacons or non-ordained members of the faithful use gestures or actions which are proper to the same priest celebrant.” (Article Six, No 2)
So, in what way do we participate in this prayer?
Inaestimabile Donum (1980) explains: “On the other hand the assembly does not remain passive and inert; it unites itself to the priest in faith and silence and shows its concurrence by the various interventions provided for in the course of the Eucharist Prayer: the responses to the Preface dialogue, the Sanctus, the acclamation after the Consecration, and the final Amen after the Per Ipsum. The Per Ipsum itself is reserved to the priest. This Amen especially should be emphasized by being sung, since it is the most important in the whole Mass.” (No 4)
Okay, so how does this apply to our case? We need to make a distinction between ‘praying’, ‘pronouncing’ or ‘offering’ this prayer and simply following it or reading it. If we see ourselves as ‘concelebrating’ with the priest, then we are disobedying the rules above. I do not think that is the case here. If we are just following the texts, reading them or remembering them, then there is no problem and no sin.
The idea here is that in the Eucharistic Prayer we have given the gifts to be offered (the bread and wine) and have entrusted them to the priest to offer the Sacrifice on our behalf since we cannot do it ourselves. During this prayer, we must join in by offering our hearts. But we must understand that our act of joining our hearts changes us and does not effect the Eucahristic Sacrifice. That is why it is not necessary that other people be present when a priest says Mass. However, since this is such a fountain of grace and source of life for the faithful, the Church opens this treasure up to them and encourages them to participate, not as priests, but as the lay faithful. A laymen is not a ‘silent priest’ who offers in the same way but silently. They are two different modes of participation.
Now, Montie Claunch, I do not believe you are trying to ‘concelebrate,’ therefore, I do not believe you have sinned in this. I just mention all this because this is what the issue is.