"Her lamp never goes out at night". This refers to the commandment of charity, which is unlike other "lamps". Other commandments are extinguished by transgressions, as our sages, of blessed memory, said concerning the verse "For the commandment is a lamp; The teaching is a light". For commandments are like the light of a lamp; just like the wind can extinguish them, so are commandments [good deeds] extinguished by transgressions. Torah resembles the light of day. Even when all the winds of the world blow, it does not budge from its place. Thus, Torah is not extinguished by transgressions as are other commandments. Similarly with the commandment of charity – it is not extinguished by transgressions.