Hi everyone, the word 'firmament' is Biblical and can only refer to the sky, as I understood. While in Russian, my native language, the same Biblical term can be literally translated to English as 'firmness [of the sky]', and there is also the possibility to use this word as 'firmness [of the earth]'. The point is, would it sound natural if we use the English word 'firmament' for the earth, e.g. in some fantasy-like setting, not connected to our world, or wouldn't? Perhaps, if the word describes a kind of an element of the nature?