Complex sentence: A boy and his father are depicted kneeling beside the road and receiving the bread from Mary; the bread represents the Eucharist, while the abundance and richness of the food may be satire on gluttony.
Split into simpler sentences: A boy and his father are depicted kneeling beside the road. They receive bread from Mary; the bread represents the Eucharist, while the abundant richness of the food represented could be satire on gluttony.