Liber Psalmorum, 132

1. canticum graduum David ecce quam bonum et quam jucundum habitare fratres in unum

1. Behold how good and how pleasant it is for brethren to dwell in unity.

2. sicut unguentum in capite quod descendit in barbam barbam Aaron quod descendit in ora vestimenti ejus

2. Like the precious ointment on the head, that ran down upon the beard, the beard of Aaron, Which ran down to the skirt of his garment:

3. sicut ros Hermon qui descendit in montes Sion quoniam illic mandavit Dominus benedictionem et vitam usque in sæculum

3. as the dew of Hermon, which descendeth upon mount Sion. For there the Lord hath commandeth blessing, and life for evermore.