The Book of PsalmsPsalm 132
Ecce quam bonum. The happiness of brotherly love and concord.
The Douay-Rheims numbers the Psalms as the Latin Vulgate does. In Bibles translated from the Hebrew this is Psalm 133. Read Psalm 133 in the WEBC.

132Behold how good and how pleasant it is for brethren to dwell in unity.
2Like 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:
3As the dew of Hermon, which descendeth upon mount Sion. For there the Lord hath commandeth blessing, and life for evermore.