By DARWELL STONE Mystical interpretation explains the additional or allegorical or spiritual sense which is held to underlie the literal significance of persons or events or things or sayings. The principle of it was recognized by St. Paul in his phrase ‘which things have a further meaning’ (Gal 4:24); and such an interpretation of the Old Testament was used with some freedom in the New Testament. The first two chapters of the Gospel according to St.