I have spoken about Joseph of Arimathea before, in the videos linked below. Just reading a chapter by Robert M. Price in The End of Christianity, I came across this very simple aspect which shows, to me at any rate, that Matthew’s sole job seemed to be to contrive as many random prophecy fulfilments from the Old Testament as humanly possible.
Psalm 137 is one of the most famous Psalms, it has been set to music by many composers (you have most likely heard the famous interpretation by Boney M), but virtually always, the last verse is omitted. Why is that? Well, let´s look at the Psalm: