Ecclesiastes 11:4-6

He who observes the wind will not sow, and he who regards the clouds will not reap. As you do not know the way the spirit comes to the bones in the womb of a woman with child, so you do not know the work of God who makes everything. In the morning sow your seed, and at evening withhold not your hand, for you do not know which will prosper, this or that, or whether both alike will be good.