How do we know that God predestines events?

God's predestination is a core doctrine in Reformed theology, evidenced in passages such as Romans 8:29-30 and Ephesians 1:5. These verses teach that believers were chosen in Christ before the foundation of the world, highlighting that God's plan for salvation was set before creation. Furthermore, Ecclesiastes 3 emphasizes that every event occurs according to God's ordained purpose, affirming that nothing happens by chance. This understanding comforts believers, knowing that their lives and history are intricately woven by God's hand for His glory and purposes.