John Gill

The voice of the Lord is powerful,.... Or "with power" (a); as thunder, in the effect of it, shows; and so is the Gospel, when it comes, not in word only, but is attended with the power of God to the conversion and salvation of souls; it is then quick and powerful, Heb 4:12; and the word of Christ personal, when here on earth, was with power, Luk 4:32; the voice of the Lord is full of majesty; Christ, in his state of humiliation, spake and taught as one having authority; and now, in the ministration of his Gospel by his servants, he goes forth with glory and majesty, Psa 45:3. (a) "in potentia", Pagninus, Montanus; "cum potentia", Cocceius, Michaelis; "with able power", Ainsworth.