Psalms 133 - Wesley's Explanatory Notes

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.

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.