“This would be interesting, since the last supper was not celebrated with sinners.”
That’s an interesting point, though you may have drawn the wrong conclusion. Your assumption is that the apostles were not sinners... The only man we know that was “without sin” was Jesus himself. Which would imply all of the apostles were sinners, would it not?
We’ll my broad statement might lead you to construing my statement of sin, in the broadest sense, I was not lumping the Apostles together with adulterers, and betrayers, which they were not.
Yes they were sinners, in a sense that all are not perfect, but there is clearly a difference between those who have repented and those who persist in sinful ways. Judas is an example, and a very clear example in John’s Gospel, of one who was clearly seeking to betray Jesus and at the last supper finally turned towards evil.