No correction from me.
If I had my druthers, I’d say that the communion line is for receiving communion. I tell folks about making a spiritual communion and make sure they understand that if they are visiting elsewhere, they may run into a parish where blessings aren’t given. But my pastor has made it clear that he welcomes everyone to come up during communion and I’m not going to speak against him. I’m also not going to speak against the many people who have commented how much it means to them to be able to go up for a blessing at communion.
Even the Pope Emeritus has recognized how common it is to offer a blessing at communion:
In many countries it has become customary for persons who are not able to receive communion (for example, the members of other confessions) to approach the altar with their hands folded over their chests, making it clear that they are not receiving the sacrament but are asking for a blessing, which is given to them as a sign of the love of Christ and of the Church. This form could certainly be chosen also by persons who are living in a second marriage and therefore are not admitted to the Lord’s table. The fact that this would make possible an intense spiritual communion with the Lord, with his whole Body, with the Church, could be a spiritual experience that would strengthen and help them.
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