This means that the person is experiencing such pain that he must lie in bed. Alternate translation: "with pain so that he must lie in bed" (See: [[rc://en/ta/man/jit/figs-explicit]])
The word "strife," possibly referring to the man's reaction to God causing him to "turn away from his deed" [Job 33:17](../33/17.md), is here a metaphor for physical pain. The word "bones" here is a synecdoche for his whole body, which is in physical pain. Alternate translation: "constant pain in his body" (See: [[rc://en/ta/man/jit/figs-metaphor]] and [[rc://en/ta/man/jit/figs-synecdoche]])