Psalms 133

1 A Song of degrees. Of David. Behold, how good and how pleasant it is for brethren to dwell together in unity!

A song for pilgrims going up to Jerusalem. A psalm of David. How good, how delightful it is when people live together lin harmony!

2 Like the precious oil upon the head, that ran down upon the beard, upon Aaron's beard, that ran down to the hem of his garments;

This is as precious as the oil used to anoint Aaron, running down from his head onto his beard, onto the collar of his clothes.

3 As the dew of Hermon that descendeth on the mountains of Zion; for there hath Jehovah commanded the blessing, life for evermore.

It's like the dew of Mount Hermon that falls on Zion's mountains. That is where the Lord gave his blessing of life that lasts forever.