Psalm 133 in the Vulgate numbering Bless follows is Psalm 134 in Hebrew numbering (the NABRE, RSV and KJV). Here are all 3 verses in the Catholic Public Domain Version, with the Latin of the Clementine Vulgate beside them.
About this chapter
Bp. Challoner’s summary
Ecce nunc benedicite. An exhortation to praise God continually.
A Canticle in steps. Behold, bless the Lord now, all you servants of the Lord, who stand in the house of the Lord, in the courts of the house of our God.
Canticum graduum. Ecce nunc benedicite Dominum, omnes servi Domini: qui statis in domo Domini, in atriis domus Dei nostri.