 plural. When you look at mountains in the prophetic language, oftentimes mountains are used for kingdoms. We can see this in the example of the dream that Nebuchadnezzar had that's recorded in Daniel chapter 2 if we read verse 35 and then verse 44. Verse 35 reads, "...then the iron, the clay, the bronze, the silver, and the gold were crushed together and became like chaff from the summer threshing floors."