To serve future generations as a tangible proof of the infinite power of God, the Lord bade Moses lay an earthen vessel full of manna before the Holy Ark, and this command was carried out by Aaron in the second year of the wanderings through the desert. When, many centuries later, the prophet Jeremiah exhorted his contemporaries to study the Torah, and they answered his exhortations, saying, "How shall we then maintain ourselves?" the prophet brought forth the vessel with manna, and spoke to them, saying: "O generation, see ye the word of the Lord; see what it was that served your fathers as food when they applied themselves to the study of the Torah. You, too, will God support in the same way, if you will but devote yourselves to the study of the Torah.