When the Israelites saw it, they asked one another, “What is it?” For they did not know what it was. So Moses told them, “It is the bread that the LORD has given you to eat.
Jewish Publication Society of America Version (JPS1917) - Exodus 16:15 >And when the children of Israel saw it, they said one to another: 'What is it?' — for they knew not what it was. And Moses said unto them: 'It is the bread which the LORD hath given you to eat.