They go up to the mountains— They went up mountains, they went down vallies, to the place which thou hast founded for them. Here a noble image is lost in our translation, for want of considering that the sacred writer is describing the motion of the waters over mountains and in vallies, when, at God's command, they filed off from the surface of the earth unto the posts assigned them. Mudge. This psalm will gain great light by being compared with the first chapter of Genesis, and considered as a kind of comment upon it.
Related Commentaries of Psalms 104:8
Psalms 104:8
8 They go upa by the mountains; they go down by the valleys unto the place which thou hast founded for them.