The Scofield Bible Commentary, by Cyrus Ingerson Scofield, [1917], at sacred-texts.com
Song of Solomon (Canticles) 5:2
sleep
The bride is satisfied with her washed feet while the Bridegroom, His "head filled with dew," and His "locks with the drops of night," is toiling for others. See (Luk 6:12); (Luk 14:21-23). The state of the bride is not one of sin, but of neglect of service. She is preoccupied with the graces and perfections which she has in Christ through the Spirit; (Co1 12:4-11); (Gal 5:22); (Gal 5:23). It is mysticism, unbalanced by the activities of the Christian warfare. Her feet are washed, her hands drop with sweet smelling myrrh; but He has gone on, and now she must seek Him.
Compare (Luk 2:44); (Luk 2:45).
Song of Solomon (Canticles) 5:6
I sought him
Observe, it is now the Bridegroom Himself who occupies her heart, not his gifts -- myrrh and washed feet (Joh 13:2-9).
Song of Solomon (Canticles) 5:12
fitly set
Hebrew, "sitting in fulness;" that is, fitly placed, and set as a precious stone in the foil of a ring.