Rabbi Yossi offered a provocative comparison: just as a prophet reveals what is hidden, the manna did the same. The wordplay is built into the Hebrew—the word maggid (one who tells or reveals) connects to gad, a term associated with the manna's coriander-like appearance. But Rabbi Yossi was making a point far beyond etymology.
According to the tradition preserved in the Talmud (Yoma 75a), the manna served as a kind of divine lie detector. When two neighbors had a dispute—say, one accused the other of theft—the manna would reveal the truth. If a man claimed his neighbor's servant had stolen from him, the next morning the manna would fall in a way that exposed the facts. The guilty party's portion might appear at the other's doorstep, or the quantity would shift to reflect the true state of affairs.
The manna was not just food. It was prophecy in edible form. Just as God sends prophets to speak truth to a community that might prefer to hide behind lies, God sent the manna to make hidden realities visible. Disputes that might have festered for years were settled overnight by the heavenly bread's testimony.
Rabbi Yossi's teaching transforms the manna from a miracle of sustenance into a miracle of justice. The same heaven that fed Israel also judged Israel—gently, without violence, but with an honesty that no human court could match. Every morning when the Israelites stepped out of their tents to gather their portion, they were not only receiving breakfast. They were receiving a verdict. The manna revealed what was hidden, just as a prophet would, because its source was the same: the all-knowing God who sees every secret and conceals nothing from those who seek the truth.