Who is this that cometh. — The dramatic feeling is decidedly shown in the passage introduced by this verse, but we still regard it as a scene passing only in the theatre of the fancy, introduced by the poet in his Epithalamium, partly from his sympathy with all newly-wedded people, partly (as Song of Solomon 8:11) to contrast the simplicity of his own espousals, of which all the joy centred in true love, with the pomp and magnificence of a royal marriage, which was a State ceremony.
Wilderness. — Heb., midbar. The idea is that of a wide open space, with or without pasture: the country of nomads, as distinguished from that of a settled population. With the article (as here) generally of the desert of Arabia, but also of the tracts of country on the frontiers of Palestine (Joshua 8:16; Judges 1:16; comp. Matthew 3:1, &c). Here = the country.
Like pillars of smoke. — The custom of heading a cortege with incense is both very ancient and very general in the East: probably a relic of religious ceremonials where gods were carried in processions. For Frankincense, see Exodus 30:34.