Here is another psalm that has great imagery. Look at vss. 3-4. Do you see the sea fleeing? That must have been a reference to the parting of the Red Sea. I don’t have a direct correlation to the next image. Can you see the mountains and the hills skipping? I don’t have a biblical image that correlates directly with that image, but I like it. The closest thing that I can think of is when Jesus says that if we would have the faith even the size of a tiny mustard seed then we could tell a mountain to move, and it would! That works for me.