Jamieson, Fausset and Brown on Song of Solomon 5:7

7. watchmen--historically, the Jewish priests, &c. (see on So 5:2); spiritually, ministers (Is 62:6; He 13:17), faithful in "smiting" (Psalm 141. 5), but (as she leaves them, {v.} 8) too harsh; or, perhaps, unfaithful; disliking her zeal wherewith she sought Jesus Christ, first, with spiritual prayer, "opening" her heart to Him, and then in charitable works "about the city"; miscalling it fanaticism (Is 66:5), and taking away her veil (the greatest indignity to an Eastern lady), as though she were positively immodest. She had before sought Him by night in the streets, under strong affection (So 3:2-4), and so without rebuff from "the watchmen," found Him immediately; but now after sinful neglect, she encounters pain and delay. God forgives believers, but it is a serious thing to draw on His forgiveness; so the growing reserve of God towards Israel observable in Judges, as His people repeat their demands on His grace.