Thought from Today's Old Testament Passage:
There is no denying that the Song of Solomon (or Song of Songs, or Canticles, as it is variously called) is a very different book from the rest of the Bible. Its theme is not doctrine but inner feeling—that most exciting and uplifting of all emotions, the emotion of love. Love is that which knits two souls together into a larger unity, an organic partnership that responds to and reflects the love of God for His children and the love of Christ for His chosen bride, the church. The importance of Canticles is that it is a book about love, especially love between husband and wife as a paradigm of the love between the Savior and His redeemed people….
In other words, the deep, emotional commitment of a good husband toward the wife he adores bears a typical relationship (albeit a faint and infinite one) to the inexhaustible and eternal love that God has toward His redeemed (cf. Eph. 3:18-19). This is spelled out most fully in the classic passage from Ephesians 5:21-27.
(Gleason Archer, Encyclopedia of Bible Difficulties (Grand Rapids, MI: Zondervan Publishing House, 1982), p. 261)