Ellicott's Commentary for English Readers - Psalms 133:3
(3) As the dew . . .—Better, keeping the same word as in Psalms 133:2. like the dew of Hermon, which descended on the Mount Zion. This statement of the dew of a mountain in the north descending on a mountain in the south, appears so strange and impossible that our version inserted the words, “and as the dew.” But the sentence is constructed in exactly the same form as Psalms 133:2, and the dew on Mount Zion must be as clearly the same dew as that on Mount Hermon, as the oil running down to the... read more
Ellicott's Commentary for English Readers - Psalms 133:2
(2) It is like.—The italics of the Authorised Version are wrongly inserted. Unity could not be said to flow down. The other term of the simile is implied in Psalms 133:3. (See Note.) Literally, Like the oil, the good oil, on the head descending upon the beard, Aaron’s beard, which (was) descending to the mouth of his robes. Oil meets us as the standing symbol of joy and festivity. (See Psalms 45:7, Note; Isaiah 61:3.) It is also brought closely into connection with love (Song of Solomon 1:3).... read more