Wesley's Explanatory Notes

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;

Ointment — It is no less grateful and refreshing than that oil which was poured forth upon Aaron's head at the time of his consecration to the priestly office.

Skirts — Not to the lower skirt or bottom of his sacerdotal garment, but to the upper skirt of it, or the mouth of it, as the Hebrew word properly signifies.

As the dew of Hermon, and as the dew that descended upon the mountains of Zion: for there the LORD commanded the blessing, even life for evermore.

Zion — It is as desirable as the dew which falls upon mount Hermon, nay, as desirable as that heavenly dew of God's ordinances and graces which he hath commanded to fall upon the mountains of Zion and Moriah, and others which are round about Jerusalem.

There — Where brethren live in peace and unity.