Grassi, Joseph A. “The Five Loaves of the High Priest.” Novum Testamentum 7, no. 2 (1964): 119-22. [Israel/Priesthood/Ritual/
This brief article suggests that there is a relationship between the story of Jesus’ discussion following eating some wheat plucked on the Sabbath and the story of David’s eating the shewbread. He justified it in terms of David eating the bread of the presence in 1 Sam. 21:1-6. Grassi suggests there are a number of parallels between these stories and the multiplication of the loaves in Mk. 6 that lead him to believe the 1 Samuel story may have been used for Eucharistic purposes by the early Church. The similarities are pointed out by a chart with the stories in parallel columns. An interesting, but not entirely compelling theory.