It gives a very brief exegesis, briefer even than Baker's.
Several important swords were discovered by heroes in The Hobbit, the briefer 'prequel' to The Lord of the Rings.
On the whole, the story of Isaac's wife at Gerar is briefer and not so elevated as that of Sarah, but the parallel to xxi.
Possibly this fact points to his Marcan document having been briefer than our Mark, and to its having afterwards received interpolations (see Mark, Gospel Of St).
Some people do enjoy chatting with the same person regularly, but others prefer briefer connections.