How do we know that God's mercy is sovereignly dispensed?

The sovereignty of God's mercy can be understood through His actions with individuals such as Pharaoh, whom He raised up to demonstrate His power and declare His name throughout the earth. Romans 9:16 states that it is not of him who wills or runs, but of God who shows mercy. This indicates that God's mercy is not based on human effort or decision, but rather on His divine will and purpose. Such a perspective reinforces the belief in the providence of God, orchestrating events to fulfill His sovereign plan.