From Arguing with God: A Theological Anthropology of the Psalms by Bernd Janowski:

While we are used to separating strictly the concrete and the abstract, or to working with concrete objects like tree, throne, or mountain or with abstract concepts like life, kingdom, or place of the Deity, ancient Near Eastern cultures prefer to use “concepts that by themselves are concrete yet often indicate something extending far beyond their concrete meaning.”112 Ancient Near Eastern cultures did not distinguish between the concrete and the abstract, but upheld the interrelation between them by representing the “unity of reality” with the help of symbols.