''They that wait for the LORD shall renew their strength' – 'Rabbi Nehorai says, I set aside all trades in the world and I teach my son only Torah' etc. Why? Because the Torah will stand for him in good stead in his old age, giving him hope and support. Regarding youth it says, 'They that wait for the LORD shall renew their strength' and regarding old age it says, 'They shall still bring forth fruit in old age; they shall be full of sap and richness'. Therefore every person who deals in Torah is elevated, not only those of the People of Israel but non-Jews as well.
They said of the Rav HIDA [Rabbi Haim Yosef David Azulai, 1724-1806] that he had a sister who was more knowledgeable than he in Mishna but would read [the letter] het as chet, so he said to her: My sister, you are not Ashkenazic, why do you read het as chet? She answered him: Brother, dear, Scripture says "they that wait for the LORD shall renew their strength" – kaf renews het. [strength in Hebrew – ko'ach, written with kaf and het].