Twelve Loaves, Frankincense, and Priestly Bread of the Presence
This Thread is delightfully concrete: Leviticus explains the bread → David actually eats it → Jesus later cites David's act. The Bible interprets the Bible in three steps.
Where this fits in the story: Exodus 25:23–30 — Certain: the table and bread of the Presence are commanded; Leviticus supplies recurring preparation and priestly consumption.
Where Scripture takes it next: Mark 2:23–28 / Matthew 12 / Luke 6 — Certain authorial reference to David's episode. Jesus explicitly invokes David eating the bread of the Presence in the Sabbath controversy.