cast one's bread upon the waters, to

cast one's bread upon the waters, to

To invest one’s time, money, or effort without expecting an immediate return or reward. The term comes from the Book of Ecclesiastes (11:1)—“Cast thy bread upon the waters: for thou shalt find it after many days”—urging the congregation to give generously, for one day they would indeed be rewarded. A more modern example is, “Cast your bread upon the waters and it will come back to you—buttered” (Elbert Hubbard, Book of Epigrams, 1911).
See also: bread, cast, upon