Psalms 134
The Psalter's shortest call to bless the Lord at night.
Psalm 134 is the final and shortest of the songs of ascent, calling on the servants "which by night stand in the house of the LORD" to lift their hands in the sanctuary and bless Him. It closes the sequence begun many chapters earlier, following directly after Psalms 133's picture of unity.
A Song of the Ascents. Lo, bless Jehovah, all servants of Jehovah, Who are standing in the house of Jehovah by night.
Lift up your hands `in' the sanctuary, And bless ye Jehovah.
Jehovah doth bless thee out of Zion, The maker of the heavens and earth!