manna: the bread-like food God supplied for Israel to eat during the wilderness years, which the New Testament takes up as the picture of bread from heaven
This word is not really a Greek word. It is the Hebrew name for the wilderness food spelled out in Greek letters, and English later borrowed it again in the same way, as "manna". Every New Testament writer who uses it is reaching back to a single story: the years when Israel woke each morning to find a flaky, seed-sized food lying on the ground, gathered only as much as each person could eat that day, and lived on it until they crossed into the promised land.
By the first century that story had grown into a rich tradition, and the New Testament pulls it in three directions:
- In the long exchange at Capernaum the crowd offers the manna as Moses' credential, quoting their scriptures back to Jesus, and he answers that the ancestors who ate it still died while he is the living bread that came down from heaven.
- Hebrews lists it among the furnishings of the old sanctuary, a portion sealed in a gold jar inside the covenant chest as a relic of an arrangement now past.
- Revelation turns it forward, promising "the hidden manna" to whoever holds out under pressure, drawing on a Jewish hope that the jar put out of sight long ago would be brought out again when God finally set things right.
So the word always names the same substance, but in the New Testament it almost never stays a plain food word. Set beside ordinary bread (ἄρτος), it marks the difference between what God once supplied to keep one generation alive and what he gives that lasts.