en_tn/job/09/08.md

who by himself stretches out the heavens

God is spoken of as creating the heavens without any help, as if the heavens were fabric that he stretches out. (See: rc://en/ta/man/translate/figs-rpronouns and rc://en/ta/man/translate/figs-metaphor)

tramples down the waves of the sea

God is spoken of as calming the sea as if with his feet. AT: "puts his feet down on the waves of the sea" or "calms the waves of the sea" (See: rc://en/ta/man/translate/figs-metaphor)