Before the Lord - This is altered from 1 Chronicles 16. The language there is simply, “Then shall the trees of the wood sing out at the presence of the Lord, because he cometh to judge the earth.” The meaning here is, that all these things have occasion to praise the Lord whenever he appears; to rejoice in the presence of Him who has made them what they are.
For he cometh - That is, he will come. He will manifest himself as a righteous judge. He will come to reign over the world, and there will be in his reign universal occasion for joy. The allusion would seem to be to some future time when God would come to reign among people; to dispense justice; to vindicate his people, and to establish truth. The “language” is such as would properly refer to the anticipated reign of the Messiah, as a reign of righteousness, and is such language as is frequently employed in the Old Testament to denote the character of his reign. There is no reason to doubt that this psalm may be “designed” to describe the reign of the Messiah, and that the psalmist in this language may have looked forward to that future kingdom of righteousness and peace.
For he cometh to judge the earth ... - See this language explained in the notes at Psalms 72:2-4; and the notes at Isaiah 11:2-5. What is here stated occurs now, wherever the gospel reigns in the hearts of people; it will be fully accomplished when the Lord Jesus shall come again and judge the world.