Q: I am wondering what is the most appropriate form of Morning Prayer that should be used when we replace our morning mass on Holy Thursday, Good Friday and Holy Saturday?
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A: The most appropriate form is Morning Prayer from the Liturgy of the Hours. You could precede or replace it with the Office of Readings. Part IV of the General Instruction of the Liturgy of the Hours encourages the Office of Readings, which replaces the former tenebrae.