The very first sacrifice offered to God was Cain's sacrifice of the field, which God rejected. Scripture doesn't tell us why God rejected it, just that it did not find Favour with God.
His brother's animal sacrifice, by necessity a blood sacrifice, God accepted. Again Scripture doesn't tells us God's reasoning.
For the next thousands of years, the ancient Jews reasoned that what God wanted was blood sacrifices.
Infact, we see that blood offerings were still required in Christ's earthly time. Our Lady and St. Joseph offered 2 pidgeons for Christ's circumcision.
Now at the Last Supper, what Christ would have been eating was a Paschal Meal, which according to Scripture they were to eat the paschal lamb, with unleavened bread (matzot)and bitter herbs (marror). The modern seder has more to it, but I would assume that these three basics are ever present.
Whatever else there was on the table at the Last Supper there must have been Unleavened Bread, The Paschal Lamb, and bitter herbs, though scripture also tells us that there was wine.
Christ took the BREAD and WINE (both of the field -Cain's offering) and offering thanks and praise, offered it to God. Cain's offering was finally made acceptable when Christ made it perfect.
For millenia God consumed the Blood Sacrifices offered by the people.
Now, God not only accepts the grain offering, but once perfected into the Most Perfect Blood Sacrifice as the Body and Blood Of Christ, we, not GOD consume the sacrifice.
Scripture to keep in mind
Six things there are, which the Lord hateth, and the seventh his soul detesteth:  Haughty eyes, a lying tongue, hands that shed innocent blood,  A heart that deviseth wicked plots, feet that are swift to run into mischief, A deceitful witness that uttereth lies, and him that soweth discord among brethren.  My son, keep the commandments of thy father, and forsake not the law of thy mother. ***Cf:Douay-Rheims Proverbs 6: 16-20
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