Psalms 109:24 KJV
My knees are weak through fasting; and my flesh faileth of fatness.
Psalms 109:24, King James Version
In context
23 I am gone like the shadow when it declineth: I am tossed up and down as the locust.
24 My knees are weak through fasting; and my flesh faileth of fatness.
25 I became also a reproach unto them: when they looked upon me they shaked their heads.