1 Samuel 21
Augustine of Hippo · Comentário Patrístico (catena)
1 Samuel 21:6
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. — HARMONY OF THE GOSPELS 1.3.5
1 Samuel 21:13
All these modes of expression will be thought lies, if a figurative expression or action is to be considered a lie. But, if it is not a lie when signs signifying one thing are put for another to serve the understanding of a truth, certainly that should not be judged a lie either which Jacob did or said to his father in order to be blessed, or what Joseph said in sporting with his brothers, or David's pretense of insanity, or other signs of the same kind. They should be judged as prophetic expressions and actions set forth for the understanding of those things which are true. Those things are veiled in figures, in garments as it were, in order that they may exercise the mind of the pious inquirer and not become cheap for being bare and obvious. Although we have learned their meaning stated openly and plainly in other places, still, when they are dug out of obscurity, they are somehow recreated in our knowledge and thus become sweet. A student is not hindered because they are shrouded in this way. On the contrary, they are rendered more acceptable: for being remote they are more ardently desired, and for being desired they are more joyfully discovered. — Against Lying 10.24