It is like the precious ointment upon the head, that ran down upon the beard, even Aaron's beard: that went down to the skirts of his garments; Like the precious ointment - The composition of this holy anointing oil may be seen, Exodus 30:23; sweet cinnamon, sweet calamus, cassia lignea, and olive oil. The odour of this must have been very agreeable, and serves here as a metaphor to point out the exquisite excellence of brotherly love.
Ran down upon the beard - The oil was poured upon the head of Aaron so profusely as to run down upon his garments. It is customary in the east to pour out the oil on the head so profusely as to reach every limb.