This psalm instructs us concerning a two-fold blessing:— I. Our blessing God, that is, speaking well of him, which here we are taught to do, Ps. 134:1 , 2 . 1. It is a call to the Levites to do it. They were the servants of the Lord by office, appointed to minister in holy things; they attended the sanctuary, and kept the charge of the house of the Lord, Num. 3:6-10 Some of them did by night stand...