So the priest gave him hallowed bread: for there was no bread there but the showbread, that was taken away from before the LORD, to put hot bread in its place the day when it was taken away.
All Commentaries on 1 Samuel 21:6 Go To 1 Samuel 21
Augustine of Hippo
AD 430
In many other testimonies of the divine Scriptures, Christ appears both as king and as priest. With good reason, therefore, he is declared to be David’s son more frequently than he is said to be Abraham’s son. Matthew and Luke have both affirmed this: the one viewing him [David] as the person from whom, through Solomon, his [Jesus’] lineage can be traced down, and the other taking him [David] for the person to whom, through Nathan, his [Jesus’] genealogy can be carried up. So he [David] did represent the role of a priest, although he was patently a king, when he ate the show bread. For it was not lawful for any one to eat that, except the priests alone.
