Seabreeze
The book of Matthew was written by an unknown author c 85ce so decades after the so called events and earliest copy is from end of 2nd to early 3rd ce .
So how can you with any certainty claim that the lord's supper took place and these words were uttered at this event and that you have the correct version as you have a copy of a copy etc and that there are no eyewitness to these events.