Jamieson, Fausset and Brown on Song of Solomon 6:2

2. gone down--Jerusalem was on a hill (answering to its moral elevation), and the gardens were at a little distance in the valleys below.

beds of spices--(balsam) which He Himself calls the "mountain of myrrh," &c. (So 4:6), and again (So 8:14), the resting-place of His body amidst spices, and of His soul in paradise, and now in heaven, where He stands as High Priest for ever. Nowhere else in the Song is there mention of mountains of spices.

feed in ... gardens--that is, in the churches, though He may have withdrawn for a time from the individual believer: she implies an invitation to the daughters of Jerusalem to enter His spiritual Church, and become lilies, made white by His blood. He is gathering some lilies now to plant on earth, others to transplant into heaven (So 5:1; Ge 5:24; Mr 4:28, 29; Ac 7:60).