What does the Bible say about luck? | Ecc 9:11-12

The main question is, do things happen by chance? If they do, then one can speak of someone being lucky or unlucky. But if they do not happen by chance, then it is inappropriate to use those terms. Much of what Ecclesiastes shares is from the perspective of a person who looks at life on earth without God, or life “under the sun.” From such a perspective—leaving God out of the picture—there seems to be good luck and bad luck. The idea is that God’s providence plays the determining role on all of our outcomes, whether it's action that He takes intentionally, or when God allows certain things to happen in our life. We cannot always determine whether God’s active or passive will is involved in the events of our lives, but we do know that all things that take place are under the umbrella of His will, whether active or passive, and, therefore, nothing is a matter of mere chance.