Psalm 134: A Song and Prayer for the Night Watch

Psalm 134

Exhortation to the Night Watch to Bless the Lord
A song of ascents

Come, bless the Lord, all you servants of the Lord who stand
in the house of the Lord during the hours of night. Lift up your hands
toward the sanctuary, and bless the Lord. May the Lord bless you
from Sion, the maker of heaven and earth.

[This short song seems to have been sung in the temple as an encouragement
for the priests and Levites who were on duty there during the night; they respond
by blessing the people.]

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I like this psalm because it is a reminder that just as the Lord does not sleep and watches over all, so too do honest people who keep the night safe and holy.