[metmom]

1323 "At the Last Supper, on the night he was betrayed, our Savior instituted the Eucharistic sacrifice of his Body and Blood. This he did in order to perpetuate the sacrifice of the cross throughout the ages until he should come again, and so to entrust to his beloved Spouse, the Church, a memorial of his death and resurrection: a sacrament of love, a sign of unity, a bond of charity, a Paschal banquet 'in which Christ is consumed, the mind is filled with grace, and a pledge of future glory is given to us.'"133

1370 To the offering of Christ are united not only the members still here on earth, but also those already in the glory of heaven. In communion with and commemorating the Blessed Virgin Mary and all the saints, the Church offers the Eucharistic sacrifice. In the Eucharist the Church is as it were at the foot of the cross with Mary, united with the offering and intercession of Christ.

That's so ridiculous. Humans didn't offer Christ as a sacrifice to God.

The only human contribution and participation to the death of Christ is putting Him on the cross and essentially pounding the nails in His hands.

Jesus was not a sacrifice offered by men to God for their sins because the lambs weren't good enough. It wasn't man's idea nor man's doing.

[annalex]

Jesus was not a sacrifice offered by men to God for their sins

Would you however, agree that Jesus was a sacrifice that He offered Himself to God? If so, what are you arguing about? If no, are you familiar with the following?

He humbled himself, becoming obedient unto death, even to the death of the cross (Philippians 2:8)

walk in love, as Christ also hath loved us, and hath delivered himself for us, an oblation and a sacrifice to God (Ephesians 5:2)