How do we know God is sovereign over our plans?

Acts 15:39-40 narrates the separation of Paul and Barnabas, providing a poignant example of God's sovereignty at work despite human disagreements. This event illustrates how God can orchestrate His purposes through the free choices and actions of individuals. Even when Paul and Barnabas parted ways due to a disagreement, God used their separate ministries to further the spread of the gospel. This affirms the Reformed understanding that God is in control of all events and works them together for His glory and the good of His people.