Hebrews 13, 15 says “Let us then offer up continually
the sacrifice of praise, which is fruit of lips that confess his name.” This is the only place in the New Testament that the words “sacrifice of praise” occur, and they are laden with meaning from the Old Testament. The first appearance of the idea is in Leviticus 7. The
zebach todah, which we might translate as “thanksgiving sacrifice” or “sacrifice of praise,” (the word “todah” is hard to translate exactly, though modern Hebrew uses it as the word for “thank you.”) consisted of three parts:
- A bloody animal sacrifice
- A ritual meal where bread was consumed
- The singing of Psalms and hymns of praise
The author of Hebrews clearly links this phrase to the Christian Eucharist, and thus
- the bloody sacrifice is that of Christ on the Cross
- the ritual meal is the consumption of the Eucharistic bread
- the singing of Psalms and hymns of praise is the liturgy
Communion has everything to do with the Last Supper, which was the beginning of the original Sacrifice of Praise offered by the Lord, as Communion is our sharing in the sacrifice. The sacrifice is not only one part of those events, the Last Supper or the Cross, but includes all of it. The cup of blessing which we bless is a share in the Cross of Christ, and the way of the Cross begins with the Last Supper.
You’re right that it’s not either/or, it’s all-inclusive.
-Fr ACEGC