@Ps 134:1-3.
1, 2. The pilgrim bands arriving at the sanctuary call on the priests,
who
stand in the house of the Lord--at the time of the evening sacrifice,
to unite in praising God in their name and that of the people, using
appropriate gestures, to which the priests reply, pronouncing the Mosaic
blessing which they alone could pronounce. A fit epilogue to the whole
pilgrim-book, Psalms 120-134.
by night--the evening service (@Ps 141:2), as opposed to
morning (@Ps 92:2).
2. Lift up your hands--(Compare @Ps 28:2).
3. After the manner directed (@Nu 6:23).
out of Zion--the Church, as His residence, and thus seat of blessings.
Thus close the songs of degrees.