Ecclesiastes 11:1-2 and 6 Invest in Many Ventures; as written by King Solomon

11 Ship your grain across the sea;
    after many days you may receive a return.
Invest in seven ventures, yes, in eight;
    you do not know what disaster may come upon the land.

Sow your seed in the morning,
    and at evening let your hands not be idle,
for you do not know which will succeed,
    whether this or that,
    or whether both will do equally well.

From DSC:
Perhaps Solomon should get more credit as one of the first wise investment advisors. If he lived today, he would likely support diversification and support the concepts behind using index funds!