Manna: Previously Unknown
Source: TTT
Deuteronomy 8:3, 16
He humbled you, and in your hunger He gave you manna to eat, which neither you nor your fathers had known, so that you might understand that man does not live on bread alone, but on every word that comes from the mouth of the LORD. / He fed you in the wilderness with manna that your fathers had not known, in order to humble you and test you, so that in the end He might cause you to prosper.