“Cast your bread upon the waters”
Cast your bread upon the waters, for after many days you will find it again. (Ecclesiastes 11:1 BSB)
What it sounds like today
A baffling instruction to throw good food into the sea.
The cultural key
Taken literally, tossing bread into water is senseless, which is the clue that it is a figure. Two readings, not mutually exclusive, fit the ancient world. The first is commercial: 'bread' can mean grain, and merchants shipped grain by sea in long-distance ventures, sending it out 'upon the waters' and waiting many months for the profit to return, so the proverb counsels bold, diversified enterprise (the next verse adds, 'divide your portion among seven or even eight'). The second is charitable: to 'cast your bread' is to give generously without visible guarantee, trusting the kindness will return in time. Either way the point is the same, act openly and generously now, accepting that the reward is delayed and unseen, because a life ruled by fear of loss risks nothing and gains nothing. The English idiom survives, but the maritime-trade and generosity backgrounds that make sense of it are usually lost.
Recovered meaning
'Casting bread on the waters' pictures either shipping grain in risky overseas trade or giving generously without guarantee, both acts whose return comes only 'after many days.' It urges bold, open-handed venturing, not literal waste.