Ecclesiastes 11:1-6

Cast thy bread upon the waters; for thou shalt find it after many days. Give a portion to seven, yea, even unto eight; for thou knowest not what evil shall be upon the earth. If the clouds be full of rain, they empty themselves upon the earth; and if a tree fall toward the south, or toward the north, in the place where the tree falleth, there shall it be. He that observeth the wind shall not sow; and he that regardeth the clouds shall not reap. As thou knowest not what is the way of the wind, nor how the bones do grow in the womb of her that is with child; even so thou knowest not the work of God who doeth all. In the morning sow thy seed, and in the evening withhold not thy hand; for thou knowest not which shall prosper, whether this or that, or whether they both shall be alike good.