Grain

Harvest staple (wheat and barley) behind "corn" in the KJV, tied to daily bread and festival rejoicing.

Scripture

Deuteronomy 16:13

13 You shall keep the feast of tents seven days, after that you have gathered in from your threshing floor and from your winepress:

Genesis 41:49

49 Joseph laid up grain as the sand of the sea, very much, until he stopped counting, for it was without number.

Ruth 2:17

17 So she gleaned in the field until evening; and she beat out that which she had gleaned, and it was about an ephah of barley.