Need makes the old wife trot
However, if we stop to think, it really contains a great deal of pathos.
Imagine your dear old mum, arthritic and failing, responding to an emergency. Most of us know her love of family and willingness to sacrifice herself would give her the strength to cope. The power of a loving mother is stronger than a nuclear blast.
No matter age or condition a mother never stops worrying about and caring for her children, and she will move Heaven and Hell to attend to them in a crisis.
It makes a mere man feel quite humble and undeserving.
If you feel a need to improve your written English this might be for you: