How Does God Predestinates?

God predestinates through

1. Personal intervention;
2. Prophets;
3. Spiritual beings such as angels and demons;
4. Nature (everything that can be scientifically explained);
5. Human free will;
6. Chance and luck.

To those who believe, all things work for their good. Our salvation is predestinated and assured. For the unbelievers, God is fate.

There is something else meaningless that occurs on earth: the righteous who get what the wicked deserve, and the wicked who get what the righteous deserve. This too, I say, is meaningless. (Ecclesiastes 8:14 NIV)

And we know that all things work together for good to them that love God, to them who are the called according to his purpose. (Romans 8:28 KJV)