The Geneva Bible Translation Notes, , at sacred-texts.com
psa 134:1"A Song of degrees." Behold, bless ye the LORD, all [ye] (a) servants of the LORD, which by night stand in the house of the LORD.
(a) You who are Levites and chiefly appointed to this office.
psa 134:2Lift up your (b) hands [in] the sanctuary, and bless the LORD.
(b) For their charge was not only to keep the temple, but to pray there and to give God thanks.
psa 134:3The LORD that (c) made heaven and earth bless thee out of Zion.
(c) And therefore has all power, bless you with his fatherly love declared in Zion. Thus the Levites used to praise the Lord, and bless the people.