Psalms 133

1 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 ointment upon the head, that ran down upon the beard, even Aaron’s beard: that went down to the skirts 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, and as the dew that descended upon the mountains of Zion: for there the Lord commanded the blessing, even 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.