Holy unity

The psalmist sings the blessings of brotherly concord, especially during the sacred liturgy in Jerusalem, which was the highest manifestation of the Jews' religious life and the fountain of their blessings.  This is implied in the figures of strengthening oil and freshening dew.  But in a much higher sense, the same is true of us in the Catholic Church: the holy Eucharist creates a saintly brotherhood in the Body of Christ.  For us the Eucharist creates a saintly brotherhood in the Body of Christ.  For us the Blessed Sacrament is the oil that brings joy and the dew that refreshes.

Ecce quam bonum, et quam jucúndum * habitáre fratres in unum.
2  Sicut unguéntum in cápite, * quod descéndit in barbam, barbam Aaron.
3  Quod descéndit in oram vestiménti ejus: * sicut ros Hermon, qui descéndit in montem Sion.
4  Quóniam illic mandávit Dóminus benedictiónem, * et vitam usque in sæculum.

Behold, how good and joyful a thing it is, * for brethren to dwell together in unity.
2  It is like the precious oil upon the head, * that ran down upon the beard, even upon the beard of Aaron.
3  That went down to the skirts of his clothing : * like as the dew of Hermon, which fell upon mount Sion.
4  For there the Lord hath commanded blessing, * and life for evermore.