Heidegger's Bible Handbook: Song of Songs: Interpretive Key

7. The most reliable key for understanding or explaining the Song.

Meanwhile, the most reliable key for understanding is able to be fetched, both from the common use of the words and phrases (for example, the kiss of love: the eyes, hands, feet attributed to Christ furnish the indication of His individual properties), and from the interpretation of the same expressions in other passages of Scripture: and from the scope of the passage: and, finally, from the explanation of Scripture itself, either in the book itself, or in other passages, just as the Bride in Song of Songs 1:2, saying, let him kiss me, etc., immediately explains herself in this way, thy loves are more pleasing than wine, etc.