The moral obligation to participate in the eucharistic sacrifice on Sundays dates from the very beginning of Christianity.

MASSsummit

The obligation to attend Sunday Mass exists. It is a commandment of the Church which binds under the penalty of grave sin. It exists for a specific reason and should be known and loved, so that the soul feels a need to fulfill it. The fact that it is a law helps to create a religious consciousness of this need, which, in turn, makes it easier to fulfill the obligation.

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