Hebrews 12:12

Wherefore lift up the hands which hang down, and the feeble knees;

Matthew 4:2

And when he had tasted forty days and forty nights, he was afterward hungry.

2 Corinthians 11:27

by weariness and painfulness, in watchings often, in hunger and thirst, in fastings often, in cold and nakedness.

Treasury of Scripture Knowledge

Summary

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

Bible References

Knees

Matthew 4:2
And when he had tasted forty days and forty nights, he was afterward hungry.
2 Corinthians 11:27
by weariness and painfulness, in watchings often, in hunger and thirst, in fastings often, in cold and nakedness.
Hebrews 12:12
Wherefore lift up the hands which hang down, and the feeble knees;