The psalm comes from Israel’s worship world, where poetry and music were central ways communities voiced gratitude, hope, and confidence about God’s rule. Its imagery fits an ancient Near Eastern setting where seas, rivers, and mountains were powerful features of lived geography and common symbols of strength and permanence. Rather than describing a scientific account of nature, the lines use familiar natural scenes to express a social reality: the people gathered to praise, envisioning the whole world as their partner in that celebration.