פּירוש אויף איוב 38:41

they wander for lack of food for their own fathers hate them, and the Holy One, blessed be He, prepares gnats for them, which are created from their dung, and they enter their mouths.

Providence also extends to the raven, traditionally regarded as one of the meanest of beasts: 'He gives cattle their food; to the raven's offspring too when they cry out' (Psalms 147:9). The Talmudic Sages asserted that 'when the raven has offspring the male tells the female that another bird impregnated her and so they despise and abandon them. What does the Holy One Blessed be He do? He ordains midges [or flies] for them [the offspring] that come out of their excrement and they eat them' (Tanchuma Deuteronomy: Ekev).