Until the day break, and the shadows flee away, I will get me to the mountain of myrrh, and to the hill of frankincense. Until the day break - Until the morning breeze. See Sol 2:17.
The shadows flee away - Till the sun sets.
Mountain of myrrh - Probably the same as the mountains of Bether, Sol 2:17. Mountains where the trees grew from which myrrh and incense were extracted.