Psalm 133

“A song of the ascents. Behold, how good and how pleasant [is] the dwelling of brethren also together. Like the good oil upon the head, coming down upon the beard, Aaron's beard, that cometh down to his garment's hem; like dew of Hermon that cometh down upon the mountains of Zion; for there hath Jehovah commanded the blessing, life for evermore “(vers. 1-3).
There is unity of blessing, in that Hermon's dew will fall on Zion.