'Bread' in the Bible

Go, eat thy bread with joy, and drink thy wine with a merry heart; for God hath already accepted thy works.

I returned, and saw under the sun, that the race is not to the swift, nor the battle to the strong, neither yet bread to the wise, nor yet riches to the intelligent, nor yet favour to men of knowledge; but time and chance happeneth to them all.

Cast thy bread upon the waters; for thou shalt find it after many days.