How do we know that God chooses leaders according to His will?

In 1 Samuel 16, God's selection of David as king illustrates His sovereign choice. David was chosen despite being the youngest and least likely candidate, demonstrating that God does not see as man sees; He looks at the heart. The narrative emphasizes that leadership in God's kingdom is appointed according to His divine purpose and will, not based on human qualifications or appearances. This principle reflects the broader biblical truth that God’s sovereignty extends to all aspects of life, including the selection of leaders, and reaffirms the necessity of grace in serving God.