Psalms 133

1 A Song of Ascents; 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 It is like the precious oil upon the head, coming down upon the beard; even Aaron's beard, that cometh down upon the collar 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 Like the dew of Hermon, that cometh down upon the mountains of Zion; for there the LORD commanded the blessing, even life for ever.

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.