Is the Eucharist a sacrifice??/ relationship to Hebrews

76 page pdf file on this http://matt1618.freeyellow.com/sacrifice.html

The Eucharist: A True Sacrifice or
a Denial of the Sufficiency of the Cross?

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By Matt1618

Go to the link ABOVE--for a long 76 page explanation

another link that gives a much shorter discussion is here another link: http://www.totustuus.com/TheSacrificeOfTheMass.pdf (this one has some mistakes in its references of Scripture--