Psalm 109:24

My knees {buckle} from fasting, and my body grows lean without fat.

Hebrews 12:12

Therefore strengthen your slackened hands and your weakened knees,

Job 19:20

My bones cling to my skin and to my flesh, and I have escaped by the skin of my teeth.

Psalm 22:14

I am poured out like water, and all my bones are out of joint. My heart is like wax; it is melted {within me}.

Psalm 32:3-4

When I kept silent, my bones were worn out due to my groaning all the day.

Psalm 35:13-14

But as for me, when they were sick, my clothing [was] sackcloth. I weakened my soul with fasting, and my prayer {returned to me unanswered}.

Psalm 38:5-8

My wounds start to stink; they rot because of my foolishness.

Psalm 69:10

When I wept in the fasting of my soul, it became reproaches for me.

Psalm 102:4-5

My heart is struck like grass and withers. Indeed, I forget to eat my bread.

Matthew 4:2

and [after he] had fasted forty days and forty nights, then he was hungry.

2 Corinthians 11:27

with toil and hardship, often in sleepless nights, with hunger and thirst, often going hungry, in cold and poorly clothed.

Treasury of Scripture Knowledge

Summary

My knees are weak through fasting; and my flesh faileth of fatness.

General references

Bible References

Knees

Psalm 22:14
I am poured out like water, and all my bones are out of joint. My heart is like wax; it is melted {within me}.
Psalm 35:13
But as for me, when they were sick, my clothing [was] sackcloth. I weakened my soul with fasting, and my prayer {returned to me unanswered}.
Psalm 69:10
When I wept in the fasting of my soul, it became reproaches for me.
Matthew 4:2
and [after he] had fasted forty days and forty nights, then he was hungry.
2 Corinthians 11:27
with toil and hardship, often in sleepless nights, with hunger and thirst, often going hungry, in cold and poorly clothed.
Hebrews 12:12
Therefore strengthen your slackened hands and your weakened knees,

My flesh

Psalm 32:3
When I kept silent, my bones were worn out due to my groaning all the day.
Psalm 38:5
My wounds start to stink; they rot because of my foolishness.
Psalm 102:4
My heart is struck like grass and withers. Indeed, I forget to eat my bread.
Job 19:20
My bones cling to my skin and to my flesh, and I have escaped by the skin of my teeth.

General references

Psalm 69:10
When I wept in the fasting of my soul, it became reproaches for me.